One read of Claude Developer Platformapi-20261109T193013Z
26 pages moved out of 890 read.
Pages moved
26
significant first
Pages read
890
in this capture
Captured
19:30 UTC
Corpus hash
c1edeb385b06
corpus-hash
What this read moved
1-25 of 26, page 1 of 2This capture is too large to show at once. Changes 1-25 of 26 are below, significant first; the rest are on the following screens.
agents-and-tools/tool-use/browser-use-sdk Changed · +5 / -5 lines
from line 1389
13891389
13901390* Availability: Available
13911391
1392| Status | Cloud platforms | Models |
1393| ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1394| Beta | Claude API, [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), Claude Mythos Preview, [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1395| Beta | [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1396| Beta | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1392| Status | Cloud platforms | Models |
1393| ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1394| Beta | Claude API, [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), Claude Mythos Preview, [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1395| Beta | [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1396| Beta | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
13971397
13981398#### [Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview)
13991399
agents-and-tools/tool-use/browser-use-tool Changed · +5 / -5 lines
from line 1623
16231623
16241624* Availability: Available
16251625
1626| Status | Cloud platforms | Models |
1627| --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1628| Available | Claude API, [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), Claude Mythos Preview, [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1629| Available | [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1630| Available | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1626| Status | Cloud platforms | Models |
1627| --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1628| Available | Claude API, [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), Claude Mythos Preview, [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1629| Available | [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
1630| Available | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
16311631
16321632#### [Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview)
16331633
agents-and-tools/tool-use/computer-use-tool Changed · +2 / -3 lines
from line 2184
21842184| `computer_20251124` | `computer-use-2025-11-24` | Claude Fable 5.1, Claude Mythos 5.1, Claude Fable 5, Claude Mythos 5, Claude Opus 5, Claude Sonnet 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 4.6, and Claude Opus 4.5 | [API reference](https://platform.claude.com/docs/en/api/beta/messages/create) |
21852185| `computer_20250124` | `computer-use-2025-01-24` | Claude Sonnet 4.5 ([deprecated](https://platform.claude.com/docs/en/about-claude/model-deprecations)), Claude Haiku 4.5, Claude Opus 4.1 ([retired, except on Claude Models on Google Cloud (Google managed) and Bedrock](https://platform.claude.com/docs/en/about-claude/model-deprecations)), Claude Sonnet 4 ([retired, except on Claude Models on Google Cloud (Google managed) and Bedrock](https://platform.claude.com/docs/en/about-claude/model-deprecations)), and Claude Opus 4 ([retired, except on Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/about-claude/model-deprecations)) | [API reference](https://platform.claude.com/docs/en/api/beta/messages/create) |
21862186
2187On Amazon Bedrock, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5 also accept the `computer_20251124` tool with the `computer-use-2025-11-24` beta header.
2187On Amazon Bedrock, Claude Fable 5.2, Claude Mythos 5.2, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5 also accept the `computer_20251124` tool with the `computer-use-2025-11-24` beta header.
21882188
21892189***
21902190
from line 2268
22682268| Status | Cloud platforms | Models |
22692269| --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
22702270| Available | Claude API, [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), Claude Mythos Preview, [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
2271| Available | [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
2272| Available | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
2271| Available | [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
22732272| Beta | Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Amazon Bedrock (InvokeModel)](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview), [Claude Opus 4.6](https://platform.claude.com/docs/en/models/opus-4-6/overview), [Claude Sonnet 4.6](https://platform.claude.com/docs/en/models/sonnet-4-6/overview), [Claude Opus 4.5](https://platform.claude.com/docs/en/models/opus-4-5/overview), [Claude Sonnet 4.5](https://platform.claude.com/docs/en/models/sonnet-4-5/overview) |
22742273
22752274#### [Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview)
build-with-claude/claude-in-microsoft-foundry Changed · +4 / -2 lines
from line 4
44description: Access Claude models through Microsoft Foundry with Azure-native endpoints and authentication.
55---
66
7This guide shows you how to set up and make API calls to Claude in Microsoft Foundry using one of Anthropic’s client SDKs or direct HTTP requests. When you access Claude in Microsoft Foundry, you are billed for Claude usage in the Azure Marketplace. You can use Claude models including Claude Fable 5.1, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Sonnet 5.5, Claude Sonnet 5, and Claude Haiku 5.5, and features such as the [1M-token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows). You manage costs through your Azure subscription.
7This guide shows you how to set up and make API calls to Claude in Microsoft Foundry using one of Anthropic’s client SDKs or direct HTTP requests. When you access Claude in Microsoft Foundry, you are billed for Claude usage in the Azure Marketplace. You can use Claude models including Claude Fable 5.2, Claude Fable 5.1, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Sonnet 5.5, Claude Sonnet 5, and Claude Haiku 5.5, and features such as the [1M-token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows). You manage costs through your Azure subscription.
88
99Claude is available in Global Standard and US Data Zone Standard deployment types in Foundry resources, billed in Claude Consumption Units through the Azure Marketplace. Visit [Claude in Microsoft Foundry pricing](https://platform.claude.com/docs/en/about-claude/pricing#claude-in-microsoft-foundry-pricing) for details.
1010
from line 619
619619
620620### Context window
621621
622Claude Fable 5.1, Claude Mythos 5.1, Claude Fable 5, Claude Mythos 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5.5, Claude Sonnet 5, Claude Sonnet 4.6, and Claude Haiku 5.5 have a [1M-token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) on Microsoft Foundry. Other Claude models, including Claude Sonnet 4.5 (deprecated), have a 200k-token context window.
622Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, Claude Mythos 5.1, Claude Fable 5, Claude Mythos 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5.5, Claude Sonnet 5, Claude Sonnet 4.6, and Claude Haiku 5.5 have a [1M-token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) on Microsoft Foundry. Other Claude models, including Claude Sonnet 4.5 (deprecated), have a 200k-token context window.
623623
624624### Claude features not supported for Claude in Microsoft Foundry
625625
from line 658
658658
659659| Model | Default deployment name | Hosted on Azure | Hosted on Anthropic |
660660| :---------------------------------------------------------------------------------------------------- | :---------------------- | :-------------: | :-----------------: |
661| Claude Fable 5.2 | `claude-fable-5-2` | | ✓ |
662| Claude Mythos 5.2 ([limited availability](https://support.claude.com/en/articles/14604842)) | `claude-mythos-5-2` | | ✓ |
661663| Claude Fable 5.1 | `claude-fable-5-1` | | ✓ |
662664| Claude Mythos 5.1 ([limited availability](https://support.claude.com/en/articles/14604842)) | `claude-mythos-5-1` | | ✓ |
663665| Claude Fable 5 | `claude-fable-5` | | ✓ |
build-with-claude/claude-on-amazon-bedrock-legacy Changed · +7 / -5 lines
from line 149
149149#### API model IDs
150150
151151<Note>
152 Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 5.5, Claude Opus 4.8, and Claude Opus 4.7 are reachable through `InvokeModel` on `bedrock-runtime`. These requests are served by the same infrastructure as the [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) endpoint. For the native Messages API request shape and full feature parity, use that page. These models are omitted from the model table on this page because they do not have ARN-versioned model IDs.
152 Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 5.5, Claude Opus 4.8, and Claude Opus 4.7 are reachable through `InvokeModel` on `bedrock-runtime`. These requests are served by the same infrastructure as the [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) endpoint. For the native Messages API request shape and full feature parity, use that page. These models are omitted from the model table on this page because they do not have ARN-versioned model IDs.
153153</Note>
154154
155155Lifecycle terms (Deprecated, Retired) are defined in [Model deprecations](https://platform.claude.com/docs/en/about-claude/model-deprecations). Lifecycle dates on partner-operated platforms are set by the partner and can differ from the Claude API schedule. For the current retirement date of any model on Amazon Bedrock, see [Amazon Bedrock’s model lifecycle page](https://docs.aws.amazon.com/bedrock/latest/userguide/model-lifecycle.html).
from line 766
766766
767767The [computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool) and [browser use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool) toolsets are available through the InvokeModel API for these models:
768768
769* Claude Fable 5.2
770* Claude Mythos 5.2
769771* Claude Fable 5.1
770772* Claude Fable 5
771773* Claude Opus 5.5
from line 785
783785
784786### Mid-conversation system messages on Bedrock
785787
786[Mid-conversation system messages](https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages) are available through the InvokeModel API for Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Sonnet 5.5, and Claude Haiku 5.5. As described in the note under [API model IDs](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy#api-model-ids), these requests are served by the same infrastructure as the [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) endpoint. No beta header is required for mid-conversation system messages. This feature is not available on Claude Sonnet 5. Use the top-level `system` field instead. It is not available for the ARN-versioned models in the model table on this page.
788[Mid-conversation system messages](https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages) are available through the InvokeModel API for Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Sonnet 5.5, and Claude Haiku 5.5. As described in the note under [API model IDs](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy#api-model-ids), these requests are served by the same infrastructure as the [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) endpoint. No beta header is required for mid-conversation system messages. This feature is not available on Claude Sonnet 5. Use the top-level `system` field instead. It is not available for the ARN-versioned models in the model table on this page.
787789
788A `role: "system"` message can also set `output_config.effort` to [change effort mid-conversation](https://platform.claude.com/docs/en/build-with-claude/effort#change-effort-mid-conversation-beta) on Claude Fable 5.1 and Claude Opus 5.5. This is in beta: add `mid-conversation-output-config-2026-07-01` to the `anthropic_beta` array in the request body. Without that value, or on Claude Fable 5, Claude Opus 5, or Claude Opus 4.8, the request returns a 400 error: `messages.N.output_config: Extra inputs are not permitted`. In the error, `N` is the index of the `system` message in `messages`.
790A `role: "system"` message can also set `output_config.effort` to [change effort mid-conversation](https://platform.claude.com/docs/en/build-with-claude/effort#change-effort-mid-conversation-beta) on Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, and Claude Opus 5.5. This is in beta: add `mid-conversation-output-config-2026-07-01` to the `anthropic_beta` array in the request body. Without that value, or on Claude Fable 5, Claude Opus 5, or Claude Opus 4.8, the request returns a 400 error: `messages.N.output_config: Extra inputs are not permitted`. In the error, `N` is the index of the `system` message in `messages`.
789791
790792**For Converse API users:** the Converse API accepts system instructions through its top-level [`system` parameter](https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_Converse.html). To add system instructions mid-conversation, use the InvokeModel API.
791793
792794### Context window
793795
794Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5.5, Claude Sonnet 5, Claude Sonnet 4.6, and Claude Haiku 5.5 have a [1M-token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) on Amazon Bedrock. Other Claude models, including Sonnet 4.5 (deprecated) and Sonnet 4 (deprecated), have a 200k-token context window.
796Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5.5, Claude Sonnet 5, Claude Sonnet 4.6, and Claude Haiku 5.5 have a [1M-token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) on Amazon Bedrock. Other Claude models, including Sonnet 4.5 (deprecated) and Sonnet 4 (deprecated), have a 200k-token context window.
795797
796798Bedrock limits request payloads to 20 MB. When sending large documents or many images, you might reach this limit before the token limit.
797799
build-with-claude/fast-mode Changed · +3 / -2 lines
from line 17
1717 Claude API: stable
1818 Claude Models on Google Cloud (Anthropic managed): stable
1919 Claude Models on Google Cloud (Google managed): stable
20 Microsoft Foundry (hosted on Azure):
20 Microsoft Foundry:
2121 availability: stable
2222 note: On Microsoft Foundry, fast mode is a separate model whose ID ends in `-fast`. Send requests to a deployment of that model, and leave out `speed`.
2323 details:
from line 43
4343
4444Fast mode works only on supported models. See [Availability](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) for details, including which models need a beta header.
4545
46On [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry), fast mode is a separate model, such as `claude-opus-5-5-fast`. Send fast mode requests to a deployment of the fast model, and leave out `speed`. A request that sets `speed` on a deployment of the model without `-fast` returns an error.
46On [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry), fast mode is a separate model, such as `claude-opus-5-5-fast`. For Claude Fable 5.2, it is `claude-fable-5-2-fast`. For Claude Mythos 5.2, it is `claude-mythos-5-2-fast`. Send fast mode requests to a deployment of the fast model, and leave out `speed`. A request that sets `speed` on a deployment of the model without `-fast` returns an error.
4747
4848<CodeGroup>
4949 ```bash cURL
from line 712
712712| Status | Cloud platforms | Models |
713713| --------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
714714| Available | Claude API, [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) |
715| Available<sup>1</sup> | [Microsoft Foundry (hosted on Anthropic)](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) |
715716| Available | Claude API, [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview) |
716717| Available<sup>1</sup> | [Microsoft Foundry (hosted on Azure)](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview) |
717718| Research preview | Claude API | [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) |
build-with-claude/preserved-thinking Changed · +6 / -5 lines
from line 16
1616 Claude API: stable
1717 Claude Platform on AWS: stable
1818 Claude Models on Google Cloud (Anthropic managed): stable
19 Amazon Bedrock: stable
1920 Claude Models on Google Cloud (Google managed): stable
2021 Microsoft Foundry: stable
2122---
from line 1643
16421643
16431644* Availability: Always on
16441645
1645| Status | Cloud platforms | Models |
1646| --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1647| Available | Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview) |
1648| Available | [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview) |
1649| Available | [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) |
1646| Status | Cloud platforms | Models |
1647| --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1648| Available | Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview) |
1649| Available | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) |
1650| Available | [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) |
16501651
16511652#### [Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview)
16521653
models/fable-5-2/migration-guide Changed · +18 / -14 lines
from line 18
1818
1919The following sections cover moving to Claude Fable 5.2, or to Claude Mythos 5.2, from Claude Fable 5.1, Claude Mythos 5.1, Claude Opus 5.5, or an earlier Claude Fable, Claude Mythos, or Claude Opus model. For the changes themselves, see [What’s new in Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2). For behavioral differences and model-specific prompting patterns, see [Prompting Claude Fable 5.2](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/prompting-claude-fable-5-2).
2020
21Claude Fable 5.2 is available on the Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), and [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed). It’s also available on [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed). [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) has the same capabilities and is available only to organizations verified through Anthropic’s verification programs, such as the [Cyber Verification Program](https://support.claude.com/en/articles/14604842).
21Claude Fable 5.2 is available on the Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), and [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed). It’s also available on [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock). It’s also available on [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed). It’s also available on [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry). [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) has the same capabilities and is available only to organizations verified through Anthropic’s verification programs, such as the [Cyber Verification Program](https://support.claude.com/en/articles/14604842).
2222
2323The baseline settings shared by `claude-fable-5-2` and `claude-mythos-5-2`:
2424
from line 43
4343
4444## Migrating to Claude Fable 5.2 from Claude Fable 5.1
4545
46Migration is mostly drop-in. The API surface, always-on adaptive thinking, the forced tool choice restriction, refusal handling, `stop_details` categories, and the data retention requirement all match Claude Fable 5.1. Claude Fable 5.2 costs less: $8 USD per million input tokens and $40 USD per million output tokens, compared with $10 USD and $50 USD on Claude Fable 5.1. Four changes can break your code. The [prefix check](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#prefix-check), which catches edits to earlier turns, applies to every account. Claude Fable 5.1 can’t read Claude Fable 5.2’s thinking blocks. The earlier computer use tool, `computer_20251124`, returns a 400 error. With the advisor tool, a Claude Fable 5.2 executor accepts only Claude Fable 5.2 or Claude Mythos 5.2 as its advisor.
46Migration is mostly drop-in. The API surface, always-on adaptive thinking, the forced tool choice restriction, refusal handling, `stop_details` categories, and the data retention requirement all match Claude Fable 5.1. Claude Fable 5.2 costs less: $8 USD per million input tokens and $40 USD per million output tokens, compared with $10 USD and $50 USD on Claude Fable 5.1. Four changes can break your code. The [prefix check](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#prefix-check), which catches edits to earlier turns, applies to every account. Claude Fable 5.1 can’t read Claude Fable 5.2’s thinking blocks. The earlier computer use tool, `computer_20251124`, returns a 400 error on every platform except Amazon Bedrock. With the advisor tool, a Claude Fable 5.2 executor accepts only Claude Fable 5.2 or Claude Mythos 5.2 as its advisor.
4747
4848### Update your model name
4949
from line 52
5252model = "claude-fable-5-2" # After
5353```
5454
55The model ID is `claude-fable-5-2` on every platform. For each platform’s ID, see the [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview) model page.
55The model ID is `claude-fable-5-2` on every platform except Amazon Bedrock, where it’s `anthropic.claude-fable-5-2`. For each platform’s ID, see the [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview) model page.
5656
5757### Breaking changes
5858
from line 70
7070
71712. **Claude Fable 5.1 can’t read Claude Fable 5.2’s thinking blocks:** On the Claude API and Claude Models on Google Cloud (Google managed), Claude Fable 5.2 reads Claude Fable 5.1’s blocks, so a conversation that moves from `claude-fable-5-1` onto `claude-fable-5-2` keeps its earlier reasoning. In the other direction, Claude Fable 5.1 can’t read Claude Fable 5.2’s blocks. If a router switch, a client-side retry, or a [classifier refusal fallback](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback) moves a conversation from Claude Fable 5.2 to another model, Claude Fable 5.1 included, the API drops the blocks that model can’t read. The request succeeds, and you aren’t billed for the dropped input tokens. The model then works without that reasoning, which can raise cost and latency on the first turn after the switch. With the `thinking-binding-controls-2026-08-01` beta header, `input_transformations` lists each dropped block with `reason: "model_binding_mismatch"`. See [Switching models mid-conversation](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#switching-models).
7272
733. **Use the computer use toolset instead of `computer_20251124`:** A `tools` entry of type `computer_20251124` returns a 400 error. Declare the `computer_toolset_20260801` toolset instead: drop the beta header and send the entry with no `name` or display dimensions. Then update your agent loop for the toolset, as [Migrate from `computer_20251124`](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#migrate-from-computer-20251124) describes.
733. **Use the computer use toolset instead of `computer_20251124`:** A `tools` entry of type `computer_20251124` returns a 400 error on every platform except Amazon Bedrock. Declare the `computer_toolset_20260801` toolset instead: drop the beta header and send the entry with no `name` or display dimensions. Then update your agent loop for the toolset, as [Migrate from `computer_20251124`](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#migrate-from-computer-20251124) describes. On Amazon Bedrock, the earlier tool works as it does on Claude Fable 5.1.
7474
75754. **A Claude Fable 5.2 executor needs a Claude Fable 5.2 or Claude Mythos 5.2 advisor:** With the [advisor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool), which is in beta, the advisor must be at least as capable as the executor. A Claude Fable 5.2 or Claude Mythos 5.2 executor accepts only Claude Fable 5.2 or Claude Mythos 5.2 as its advisor, and any other advisor, including Claude Fable 5.1 and Claude Mythos 5.1, returns a 400 `invalid_request_error`. When you change the executor’s model ID, set the `model` in the advisor tool definition to `claude-fable-5-2` or `claude-mythos-5-2`. Changing the advisor’s `model` is an edit to `tools`, so make the change in new conversations. A request that sends earlier thinking blocks back after the change fails the prefix check (see [The prefix check applies to every account](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-preserved-thinking)) and returns a 400 error, unless you set `prefix_mismatch_behavior` to `"drop_block"`. To keep your current executor and change only the advisor, set the advisor’s `model` to `claude-fable-5-2`: every executor model accepts it. A Claude Fable 5.2 advisor returns its advice encrypted, so if your code reads the advice text, see [Result variants](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#result-variants). The same pairs apply to the advisor of a [Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview) agent, so set that advisor’s `model` to one of these two models when you change the agent’s. See [Model compatibility](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#model-compatibility) and [Give the session an advisor](https://platform.claude.com/docs/en/managed-agents/multiagent-orchestration#give-the-session-an-advisor).
7676
from line 86
8686
8787* Update the model name from `claude-fable-5-1` to `claude-fable-5-2`.
8888* Check your [rate limits](https://platform.claude.com/docs/en/api/rate-limits#rate-limits) before you move production traffic. Claude Fable 5.2 has its own rate limit, separate from the one Claude Fable 5.1 and Claude Fable 5 share.
89* If you use computer use through `computer_20251124`, Claude Fable 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
89* If you use computer use through `computer_20251124` anywhere except Amazon Bedrock, Claude Fable 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
9090* If you use the advisor tool with Claude Fable 5.2 as the executor, set the advisor’s `model` to `claude-fable-5-2` or `claude-mythos-5-2`.
9191* If your code builds the `messages` array itself, run a session with the `thinking-binding-controls-2026-08-01` beta header and `prefix_mismatch_behavior: "drop_block"`, log `input_transformations`, and fix every `prefix_binding_mismatch` entry. Do this even if your account never hit the check on Claude Fable 5.1.
9292* Pick a production `prefix_mismatch_behavior`: `"error"` (the default), or `"drop_block"` as a stopgap while you fix the edits, because [dropping blocks can raise output tokens](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#drop-block-cost). Monitor the 400 errors or the `input_transformations` entries.
from line 99
9999
100100[Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) is the counterpart to Claude Fable 5.2 for organizations verified through Anthropic’s verification programs, such as the [Cyber Verification Program](https://support.claude.com/en/articles/14604842). Confirm that your organization has access to Claude Mythos 5.2 before you switch model IDs.
101101
102Claude Mythos 5.2 enforces the [prefix check](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#prefix-check) for every account, as Claude Fable 5.2 does. [When `prefix_mismatch_behavior` is unset](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#enforcement) shows where Claude Mythos 5.1 already returns the error. If your code edits earlier turns, see [Editing earlier turns invalidates thinking blocks](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-edited-history) for what to change and how to test, and run the test against `claude-mythos-5-2`.
102Claude Mythos 5.2 enforces the [prefix check](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#prefix-check) for every account, as Claude Fable 5.2 does. [When `prefix_mismatch_behavior` is unset](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#enforcement) shows where Claude Mythos 5.1 already returns the error. On Amazon Bedrock, Claude Mythos 5.2 returns the 400 error for edited earlier turns, where Claude Mythos 5.1 accepts such a request. If your code edits earlier turns, see [Editing earlier turns invalidates thinking blocks](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-edited-history) for what to change and how to test, and run the test against `claude-mythos-5-2`.
103103
104104On the Claude API and Claude Models on Google Cloud (Google managed), Claude Mythos 5.2 reads Claude Mythos 5.1’s thinking blocks, so a conversation that moves from `claude-mythos-5-1` onto `claude-mythos-5-2` keeps its earlier reasoning. In the other direction, Claude Mythos 5.1 can’t read Claude Mythos 5.2’s blocks: the API drops them, and the request succeeds. See [Switching models mid-conversation](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#switching-models).
105105
106106With the [advisor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool), which is in beta, a Claude Mythos 5.2 executor accepts only Claude Mythos 5.2 or Claude Fable 5.2 as its advisor. A Claude Mythos 5.1 or Claude Fable 5.1 advisor returns a 400 error. See [A Claude Fable 5.2 executor needs a Claude Fable 5.2 or Claude Mythos 5.2 advisor](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-advisor-pairs).
107107
108Claude Mythos 5.2 supports computer use through the `computer_toolset_20260801` toolset. A `tools` entry of type `computer_20251124` returns a 400 error. See [Use the computer use toolset instead of `computer_20251124`](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-computer-use).
108Claude Mythos 5.2 supports computer use through the `computer_toolset_20260801` toolset. A `tools` entry of type `computer_20251124` returns a 400 error on every platform except Amazon Bedrock, where the earlier tool works. See [Use the computer use toolset instead of `computer_20251124`](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-computer-use).
109109
110110Claude Mythos 5.2 costs $8 USD per million input tokens and $40 USD per million output tokens, compared with $10 USD and $50 USD on Claude Mythos 5.1. Prompt cache reads are $0.20 USD per million tokens, compared with $0.25 USD.
111111
from line 119
119119### Migration checklist
120120
121121* Update the model name from `claude-mythos-5-1` to `claude-mythos-5-2`.
122* If you use computer use through `computer_20251124`, Claude Mythos 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
122* If you use computer use through `computer_20251124` anywhere except Amazon Bedrock, Claude Mythos 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
123123* If you use the advisor tool with Claude Mythos 5.2 as the executor, set the advisor’s `model` to `claude-mythos-5-2` or `claude-fable-5-2`.
124124* Keep passing `thinking` blocks back unchanged on every turn, including empty ones.
125125* If you replay stored conversations through a different account, replay each one through the account that produced it, or an account linked to it. The API drops Claude Mythos 5.2 thinking blocks that another account produced. See [Thinking blocks stay with the account that produced them](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#account-bound-thinking).
from line 157
157157
158158 Claude Fable 5.2 also supports fast mode on [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), with the same `speed: "fast"` setting. Google Cloud sets its prices there. See [Cloud platform pricing](https://platform.claude.com/docs/en/about-claude/pricing#cloud-platform-pricing).
159159
160 Claude Fable 5.2 also supports fast mode on [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) for deployments hosted on Anthropic. There, fast mode is a separate model: send requests to a `claude-fable-5-2-fast` deployment and leave out `speed`.
161
160162 Claude Mythos 5.2 also supports fast mode in Messages API requests on the Claude API, at Claude Fable 5.2’s fast mode prices. [Availability of fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) lists every platform where Claude Mythos 5.2 has fast mode.
161163
162164 Remove `speed: "fast"` in Claude Managed Agents. Also remove it on any platform or hosting option where [Availability of fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) doesn’t list the model you move to.
from line 178
176178* Handle every `stop_details.category`. If you set an explicit `fallbacks` list, name only Claude Fable 5.2’s permitted targets.
177179* If a router or fallback moves conversations from Claude Fable 5.2 to Claude Opus 5.5, expect the turns after the switch to run without Claude Fable 5.2’s thinking blocks.
178180* If you replay stored conversations through a different account, replay each one through the account that produced it, or an account linked to it. The API drops Claude Fable 5.2 thinking blocks that another account produced. See [Thinking blocks stay with the account that produced them](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#account-bound-thinking).
179* If you use fast mode in Messages API requests, keep `speed: "fast"` only on a platform or hosting option where [Availability of fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) lists the model you move to. On those platforms and hosting options, re-baseline cost against the [fast mode prices](https://platform.claude.com/docs/en/about-claude/pricing#fast-mode-pricing). On every other platform or hosting option, and in Claude Managed Agents, remove `speed: "fast"`. You don’t need the `fast-mode-2026-02-01` beta header. On the Claude API, requests that send it keep working.
181* If you use fast mode in Messages API requests, keep `speed: "fast"` only on a platform or hosting option where [Availability of fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) lists the model you move to. On those platforms and hosting options, re-baseline cost against the [fast mode prices](https://platform.claude.com/docs/en/about-claude/pricing#fast-mode-pricing). On every other platform or hosting option, and in Claude Managed Agents, remove `speed: "fast"`. You don’t need the `fast-mode-2026-02-01` beta header. On the Claude API, requests that send it keep working. Claude in Microsoft Foundry is the exception: there, remove `speed: "fast"` and send requests to a `claude-fable-5-2-fast` deployment.
180182* If you use the advisor tool with Claude Fable 5.2 as the executor, set the advisor’s `model` to `claude-fable-5-2` or `claude-mythos-5-2`.
181183* In an organization with [customer-managed encryption keys](https://platform.claude.com/docs/en/manage-claude/cmek), remove `strict: true` and `output_config.format`, and validate the output in your code.
182184* Set `effort` explicitly: Claude Fable 5.2’s default is `high`, where Claude Opus 5.5’s is `medium`, so a request that omits it runs one level higher. Then re-run your [effort sweep](https://platform.claude.com/docs/en/build-with-claude/effort#recommended-effort-levels-for-claude-fable-5-2) on your own evals, and re-baseline cost and latency.
from line 211
209211
2102123. **Claude Fable 5 can’t read Claude Fable 5.2’s thinking blocks:** On the Claude API and Claude Models on Google Cloud (Google managed), Claude Fable 5.2 reads Claude Fable 5’s blocks, so a conversation that moves from `claude-fable-5` onto `claude-fable-5-2` keeps its earlier reasoning. In the other direction, Claude Fable 5 can’t read Claude Fable 5.2’s blocks. If a router switch, a client-side retry, or a [classifier refusal fallback](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback) moves a conversation from Claude Fable 5.2 to another model, Claude Fable 5 included, the API drops the blocks that model can’t read. The request succeeds, and you aren’t billed for the dropped input tokens. With the `thinking-binding-controls-2026-08-01` beta header, `input_transformations` lists each dropped block with `reason: "model_binding_mismatch"`. See [Switching models mid-conversation](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#switching-models).
211213
2124. **Use the computer use toolset instead of `computer_20251124`:** On Claude Fable 5.2, a `tools` entry of type `computer_20251124` returns a 400 error. Claude Fable 5 accepts it with its beta header. Declare the `computer_toolset_20260801` toolset instead, as [Use the computer use toolset instead of `computer_20251124`](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-computer-use) describes.
2144. **Use the computer use toolset instead of `computer_20251124`:** On Claude Fable 5.2, a `tools` entry of type `computer_20251124` returns a 400 error on every platform except Amazon Bedrock. Claude Fable 5 accepts it with its beta header. Declare the `computer_toolset_20260801` toolset instead, as [Use the computer use toolset instead of `computer_20251124`](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-computer-use) describes.
213215
2142165. **A Claude Fable 5.2 executor needs a Claude Fable 5.2 or Claude Mythos 5.2 advisor:** With the [advisor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool), which is in beta, a Claude Fable 5.2 executor accepts only Claude Fable 5.2 or Claude Mythos 5.2 as its advisor. The other advisors a Claude Fable 5 executor accepts, such as Claude Fable 5 and Claude Opus 5.5, return a 400 error. Set the advisor’s `model` to `claude-fable-5-2` or `claude-mythos-5-2` when you change the executor’s. See [A Claude Fable 5.2 executor needs a Claude Fable 5.2 or Claude Mythos 5.2 advisor](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-advisor-pairs).
215217
from line 231
229231* Pick a production `prefix_mismatch_behavior`: `"error"` (the default), or `"drop_block"` as a stopgap while you fix the edits, because [dropping blocks can raise output tokens](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#drop-block-cost). Monitor the 400 errors or the `input_transformations` entries.
230232* Keep passing `thinking` blocks back unchanged on every turn, including empty ones. If a router or fallback can move a conversation from Claude Fable 5.2 to Claude Fable 5, expect Claude Fable 5 to run without Claude Fable 5.2’s blocks.
231233* If you replay stored conversations through a different account, replay each one through the account that produced it, or an account linked to it. The API drops Claude Fable 5.2 thinking blocks that another account produced. See [Thinking blocks stay with the account that produced them](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#account-bound-thinking).
232* If you use computer use through `computer_20251124`, Claude Fable 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
234* If you use computer use through `computer_20251124` anywhere except Amazon Bedrock, Claude Fable 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
233235* If you use the advisor tool with Claude Fable 5.2 as the executor, set the advisor’s `model` to `claude-fable-5-2` or `claude-mythos-5-2`.
234236* If you change effort between requests, move the change to a per-message effort `role: "system"` message, which is in beta, where your platform supports it.
235237* If your organization has a Priority Tier commitment, plan capacity separately.
from line 263
261263
262264* Update the model name from `claude-mythos-5` to `claude-mythos-5-2`.
263265* Replace forced `tool_choice` (`any` or `tool`) with `auto` plus an explicit instruction and `strict: true` tools, or with JSON outputs. In an organization with [customer-managed encryption keys](https://platform.claude.com/docs/en/manage-claude/cmek), strict tool use and JSON outputs aren’t available for Claude Mythos 5.2. There, keep `auto` and the instruction, and validate the tool input in your code.
264* If you use computer use through `computer_20251124`, Claude Mythos 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
266* If you use computer use through `computer_20251124` anywhere except Amazon Bedrock, Claude Mythos 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
265267* If you use the advisor tool with Claude Mythos 5.2 as the executor, set the advisor’s `model` to `claude-mythos-5-2` or `claude-fable-5-2`.
266268* Keep passing `thinking` blocks back unchanged on every turn, including empty ones.
267269* If you replay stored conversations through a different account, replay each one through the account that produced it, or an account linked to it. The API drops Claude Mythos 5.2 thinking blocks that another account produced. See [Thinking blocks stay with the account that produced them](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#account-bound-thinking).
from line 295
293295
2942965. **Text between tool calls is returned in thinking blocks:** On Claude Opus 5, text the model writes between tool calls comes back as `text` blocks. On Claude Fable 5.2, that narration comes back as progress-update `thinking` blocks, at most one before each tool call. If your interface renders that narration, set `thinking.display` to `"updates"`, which is in beta, to receive the progress updates as text while reasoning stays hidden, or to `"summarized"` to receive both. Then render the non-empty `thinking` blocks between `tool_use` blocks. See [Progress updates between tool calls](https://platform.claude.com/docs/en/build-with-claude/thinking#progress-updates).
295297
2966. **Use the computer use toolset instead of `computer_20251124`:** Claude Opus 5 accepts the earlier `computer_20251124` tool with its beta header. Claude Fable 5.2 returns a 400 error for it. See [Use the computer use toolset instead of `computer_20251124`](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-computer-use).
2986. **Use the computer use toolset instead of `computer_20251124`:** Claude Opus 5 accepts the earlier `computer_20251124` tool with its beta header. Claude Fable 5.2 returns a 400 error for it on every platform except Amazon Bedrock. See [Use the computer use toolset instead of `computer_20251124`](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-computer-use).
297299
2983007. **Safety classifiers and fallback:** Claude Fable 5.2’s safety classifiers cover a broader set of `stop_details` categories than Claude Opus 5’s classifiers. Expect additional `stop_details.category` values, such as `"bio"`. Handle every category in the [refusal category table](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback#refusal-response). To re-run declined requests on another model, set `fallbacks: "default"` or build your own retry. That parameter is in beta on the Claude API and Claude Models on Google Cloud (Anthropic managed), and needs the `server-side-fallback-2026-07-01` beta header. [Refusals, fallback, and billing](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#refusals-fallback-and-billing) lists the permitted fallback targets.
299301
from line 309
307309
308310 Claude Fable 5.2 also supports fast mode on [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), with the same `speed: "fast"` setting. Google Cloud sets its prices there. See [Cloud platform pricing](https://platform.claude.com/docs/en/about-claude/pricing#cloud-platform-pricing).
309311
312 Claude Fable 5.2 also supports fast mode on [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) for deployments hosted on Anthropic. There, fast mode is a separate model: send requests to a `claude-fable-5-2-fast` deployment and leave out `speed`.
313
310314 Claude Mythos 5.2 also supports fast mode in Messages API requests on the Claude API, without the header and at Claude Fable 5.2’s fast mode prices. [Availability of fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) lists every platform where Claude Mythos 5.2 has fast mode.
311315
312316 Remove `speed: "fast"` in Claude Managed Agents. Also remove it if [Availability of fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) doesn’t list the model you move to.
from line 328
324328* Pass `thinking` blocks back unchanged on every turn, including empty ones. In a tool-use loop, send them back with the tool results. See [Preserving thinking blocks](https://platform.claude.com/docs/en/build-with-claude/thinking#preserving-thinking-blocks).
325329* Replace forced `tool_choice` (`any` or `tool`) with `auto` plus an explicit instruction and `strict: true` tools, or with JSON outputs. In an organization with [customer-managed encryption keys](https://platform.claude.com/docs/en/manage-claude/cmek), strict tool use and JSON outputs aren’t available for Claude Fable 5.2. There, keep `auto` and the instruction, and validate the tool input in your code.
326330* If your code builds the `messages` array itself, run the check in [Editing earlier turns invalidates thinking blocks](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-edited-history) against `claude-fable-5-2`, fix every `prefix_binding_mismatch` entry, and keep the history append-only.
327* If you use computer use through `computer_20251124`, Claude Fable 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
331* If you use computer use through `computer_20251124` anywhere except Amazon Bedrock, Claude Fable 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead and update your agent loop for the toolset.
328332* If you use the advisor tool with Claude Fable 5.2 as the executor, set the advisor’s `model` to `claude-fable-5-2` or `claude-mythos-5-2`.
329333* If a router or fallback moves conversations from Claude Fable 5.2 to Claude Opus 5, expect the turns after the switch to run without Claude Fable 5.2’s thinking blocks.
330334* If you replay stored conversations through a different account, replay each one through the account that produced it, or an account linked to it. The API drops Claude Fable 5.2 thinking blocks that another account produced. See [Thinking blocks stay with the account that produced them](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#account-bound-thinking).
models/fable-5-2/overview Changed · +14 / -12 lines
from line 43
4343
4444### Model IDs
4545
46| Platform | Model ID |
47| :--------------------------------------------------------------------------------------------------------------------------------------------------------- | :----------------- |
48| Claude API | `claude-fable-5-2` |
49| [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | `claude-fable-5-2` |
50| [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-2` |
51| [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | `claude-fable-5-2` |
46| Platform | Model ID |
47| :--------------------------------------------------------------------------------------------------------------------------------------------------------- | :--------------------------- |
48| Claude API | `claude-fable-5-2` |
49| [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-fable-5-2` |
50| [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | `claude-fable-5-2` |
51| [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | `claude-fable-5-2` |
52| [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-2` |
53| [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | `claude-fable-5-2` |
5254
5355### Pricing
5456
from line 80
7880
7981### Availability
8082
81| Feature | Value |
82| :---------------------------------------------------------------------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
83| [Status](https://platform.claude.com/docs/en/about-claude/model-deprecations) | Active (latest) |
84| Released | November 9, 2026 |
85| Retirement | Not sooner than November 9, 2027 |
86| Platforms | Claude API, [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) |
83| Feature | Value |
84| :---------------------------------------------------------------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
85| [Status](https://platform.claude.com/docs/en/about-claude/model-deprecations) | Active (latest) |
86| Released | November 9, 2026 |
87| Retirement | Not sooner than November 9, 2027 |
88| Platforms | Claude API, [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry), [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) |
8789
8890## Good to know
8991
models/fable-5-2/whats-new-fable-5-2 Changed · +10 / -5 lines
from line 10
1010
1111* [The prefix check applies to every account](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#editing-earlier-turns-invalidates-thinking-blocks).
1212* [Only Claude Fable 5.2 and Claude Mythos 5.2 read Claude Fable 5.2 thinking blocks](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#thinking-blocks-are-tied-to-the-model-that-produced-them).
13* The earlier [`computer_20251124` computer use tool returns an error](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#computer-20251124-is-not-supported).
13* The earlier [`computer_20251124` computer use tool returns an error](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#computer-20251124-is-not-supported) on every platform except Amazon Bedrock.
1414* With the advisor tool, a Claude Fable 5.2 executor [needs a Claude Fable 5.2 or Claude Mythos 5.2 advisor](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#advisor-tool-pairs).
1515
1616## Models
from line 49
4949
5050### Use the computer use toolset instead of `computer_20251124`
5151
52Claude Fable 5.1 accepts [computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool) both as the `computer_toolset_20260801` toolset and, with the `computer-use-2025-11-24` beta header, as the earlier `computer_20251124` tool. Claude Fable 5.2 and Claude Mythos 5.2 support computer use through the toolset. A request to either model that declares a `computer_20251124` tool returns a 400 `invalid_request_error`.
52Claude Fable 5.1 accepts [computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool) both as the `computer_toolset_20260801` toolset and, with the `computer-use-2025-11-24` beta header, as the earlier `computer_20251124` tool. Claude Fable 5.2 and Claude Mythos 5.2 support computer use through the toolset. A request to either model that declares a `computer_20251124` tool returns a 400 `invalid_request_error` on every platform except Amazon Bedrock, where the earlier tool works as it does on Claude Fable 5.1.
5353
5454To move an existing integration, follow [Migrate from `computer_20251124`](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#migrate-from-computer-20251124).
5555
from line 73
7373* **Effort:** all five [effort levels](https://platform.claude.com/docs/en/build-with-claude/effort#effort-levels): `low`, `medium`, `high`, `xhigh`, and `max`. The API default is `high`. Start there, because most of the gain in capability is already present at `high`. Step up to `xhigh` for your hardest long-running coding and agentic work, where you’ve measured a gain. Reserve `max` for measuring the model’s ceiling and for the rare task where time and tokens don’t matter. See [Recommended effort levels for Claude Fable 5.2](https://platform.claude.com/docs/en/build-with-claude/effort#recommended-effort-levels-for-claude-fable-5-2).
7474* **Compaction on demand (beta):** with the `compact-2026-09-04` beta header, you choose when to replace older turns with a summary. See [Compaction on demand](https://platform.claude.com/docs/en/build-with-claude/compaction-on-demand).
7575* **Mid-conversation tool changes (beta):** you add or remove tools in a `role: "system"` message instead of editing `tools`. On the Claude API, Claude Platform on AWS, and Claude Models on Google Cloud (Anthropic managed), send the `inline-tools-2026-09-15` beta header. The `mid-conversation-tool-changes-2026-07-01` header works for changes that name a tool by reference, on the platforms that [Mid-conversation system messages and tool changes](https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages) lists. See [Mid-conversation tool changes](https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages#mid-conversation-tool-changes).
76* **Computer use:** through the `computer_toolset_20260801` toolset. The earlier `computer_20251124` tool returns a 400 error (see the [computer use breaking change](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#computer-20251124-is-not-supported)). See [Computer use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool).
76* **Computer use:** through the `computer_toolset_20260801` toolset. The earlier `computer_20251124` tool returns a 400 error on every platform except Amazon Bedrock, where both models also accept the earlier tool (see the [computer use breaking change](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#computer-20251124-is-not-supported)). See [Computer use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool).
7777
7878Compaction on demand and mid-conversation tool changes help you keep the history append-only, which the [prefix check](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#editing-earlier-turns-invalidates-thinking-blocks) requires. See each feature’s page for model and platform availability.
7979
from line 83
8383
8484Fast mode is also available for Claude Fable 5.2 on [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed).
8585
86Fast mode is also available for Claude Fable 5.2 on [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) for deployments hosted on Anthropic, as a separate model, `claude-fable-5-2-fast`.
87
8688Fast mode is also available for Claude Mythos 5.2 in Messages API requests on the Claude API. [Availability of fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) lists every platform where Claude Mythos 5.2 has fast mode.
8789
8890### Thinking blocks stay with the account that produced them
from line 125
123125Claude Fable 5.2 is available on:
124126
125127* **Claude API:** all customers, as `claude-fable-5-2`
126* **AWS:** [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), as `claude-fable-5-2`
128* **AWS:** [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), as `anthropic.claude-fable-5-2`, and [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), as `claude-fable-5-2`
127129* **Google Cloud:** [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed), as `claude-fable-5-2`, and [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), as `claude-fable-5-2`
130* **Microsoft Foundry:** [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry), as `claude-fable-5-2`, on Anthropic infrastructure (see [Hosting options](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry#hosting-options))
128131
129132Claude Mythos 5.2 is available only to organizations verified through Anthropic’s verification programs, such as the [Cyber Verification Program](https://support.claude.com/en/articles/14604842). It’s available on:
130133
131134* **Claude API:** as `claude-mythos-5-2`
135* **AWS:** [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), as `anthropic.claude-mythos-5-2`
132136* **Google Cloud:** [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed), as `claude-mythos-5-2`, and [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), as `claude-mythos-5-2`
137* **Microsoft Foundry:** [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry), as `claude-mythos-5-2`, on Anthropic infrastructure
133138
134139To request access, apply to the program that covers your use case, or contact your account team.
135140
from line 193
188193
1891941. **Check whether your code edits history.** If your code builds the `messages` array itself, run the test in the migration guide’s [prefix check section](https://platform.claude.com/docs/en/models/fable-5-2/migration-guide#fable-5-2-preserved-thinking), even if Claude Fable 5.1 has never returned the error for your account.
1901952. **Check model switches.** If a router or fallback moves conversations between models, expect every model except Claude Mythos 5.2 to drop Claude Fable 5.2’s thinking blocks, Claude Fable 5.1 and Claude Opus 5.5 included. See [Only Claude Fable 5.2 and Claude Mythos 5.2 read Claude Fable 5.2 thinking blocks](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#thinking-blocks-are-tied-to-the-model-that-produced-them).
1913. **Move computer use to the toolset.** If you use the `computer_20251124` tool, Claude Fable 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead. For the change itself, see [Use the computer use toolset instead of `computer_20251124`](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#computer-20251124-is-not-supported).
1963. **Move computer use to the toolset.** If you use the `computer_20251124` tool anywhere except Amazon Bedrock, Claude Fable 5.2 returns a 400 error for that tool. Declare `computer_toolset_20260801` instead. For the change itself, see [Use the computer use toolset instead of `computer_20251124`](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#computer-20251124-is-not-supported).
1921974. **Update the advisor.** If you use the advisor tool with Claude Fable 5.2 as the executor, set the advisor’s `model` to `claude-fable-5-2` or `claude-mythos-5-2`. See [A Claude Fable 5.2 executor needs a Claude Fable 5.2 or Claude Mythos 5.2 advisor](https://platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2#advisor-tool-pairs).
1931985. **Re-run your evals.** Include an effort sweep that starts at the default, `high`. See [Recommended effort levels for Claude Fable 5.2](https://platform.claude.com/docs/en/build-with-claude/effort#recommended-effort-levels-for-claude-fable-5-2).
194199
models/mythos-5-2/overview Changed · +13 / -11 lines
from line 38
3838
3939### Model IDs
4040
41| Platform | Model ID |
42| :--------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------ |
43| Claude API | `claude-mythos-5-2` |
44| [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | `claude-mythos-5-2` |
45| [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | `claude-mythos-5-2` |
41| Platform | Model ID |
42| :--------------------------------------------------------------------------------------------------------------------------------------------------------- | :---------------------------- |
43| Claude API | `claude-mythos-5-2` |
44| [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-mythos-5-2` |
45| [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | `claude-mythos-5-2` |
46| [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | `claude-mythos-5-2` |
47| [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | `claude-mythos-5-2` |
4648
4749### Pricing
4850
from line 74
7274
7375### Availability
7476
75| Feature | Value |
76| :---------------------------------------------------------------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
77| [Status](https://platform.claude.com/docs/en/about-claude/model-deprecations) | Active (verification required) |
78| Released | November 9, 2026 |
79| Retirement | Not sooner than November 9, 2027 |
80| Platforms | Claude API, [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) |
77| Feature | Value |
78| :---------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
79| [Status](https://platform.claude.com/docs/en/about-claude/model-deprecations) | Active (verification required) |
80| Released | November 9, 2026 |
81| Retirement | Not sooner than November 9, 2027 |
82| Platforms | Claude API, [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry), [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) |
8183
8284## Reference
8385
about-claude/pricing Changed · +2 / -0 lines
from line 172
172172
173173Fast mode for Claude Fable 5.2 is also available on [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed). Google Cloud sets its prices there. See [Cloud platform pricing](https://platform.claude.com/docs/en/about-claude/pricing#cloud-platform-pricing).
174174
175Fast mode for Claude Fable 5.2 is also available on Claude in Microsoft Foundry for deployments hosted on Anthropic. See [Claude in Microsoft Foundry pricing](https://platform.claude.com/docs/en/about-claude/pricing#claude-in-microsoft-foundry-pricing).
176
175177Fast mode is also available for Claude Mythos 5.2 on the Claude API. [Availability of fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode#feature-availability) lists every platform where Claude Mythos 5.2 has fast mode.
176178
177179| Model | Input | Output |
agents-and-tools/agent-skills/quickstart Changed · +2 / -2 lines
from line 37
3737 For Linux environments, download the release binary directly.
3838
3939 ```bash
40 VERSION=2.7.1
40 VERSION=2.8.0
4141 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
4242 case $(uname -m) in
4343 x86_64) ARCH=amd64 ;;
from line 106
106106 For Linux environments, download the release binary directly.
107107
108108 ```bash
109 VERSION=2.7.1
109 VERSION=2.8.0
110110 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
111111 case $(uname -m) in
112112 x86_64) ARCH=amd64 ;;
api/errors Changed · +1 / -1 lines
from line 540
540540
541541The Claude API returns the same message for any Anthropic-defined tool type that the requested model doesn’t support. Claude Fable 5.2, Claude Mythos 5.2, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5 support computer use through the `computer_toolset_20260801` toolset. Declare `{"type": "computer_toolset_20260801"}` without the beta header and update your agent loop as described in [Migrate from `computer_20251124`](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#migrate-from-computer-20251124). To move from `computer_20250124`, see [Move computer use to the toolset](https://platform.claude.com/docs/en/models/haiku-5-5/migration-guide#computer-use-toolset) in the Claude Haiku 5.5 migration guide.
542542
543On Amazon Bedrock, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5 also accept the `computer_20251124` tool with the `computer-use-2025-11-24` beta header. [Earlier tool versions](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#earlier-tool-versions) lists the models to use with each earlier version.
543On Amazon Bedrock, Claude Fable 5.2, Claude Mythos 5.2, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5 also accept the `computer_20251124` tool with the `computer-use-2025-11-24` beta header. [Earlier tool versions](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#earlier-tool-versions) lists the models to use with each earlier version.
544544
545545### Thinking block bound to a different conversation
546546
build-with-claude/claude-in-amazon-bedrock Changed · +3 / -1 lines
from line 334
334334
335335| Model | Model ID | Access |
336336| :------------------------------------------------------------------------------------------ | :---------------------------- | :-------------------------------------------------------------------------------------------------- |
337| Claude Fable 5.2 | `anthropic.claude-fable-5-2` | [See Access](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock#access) |
338| Claude Mythos 5.2 ([limited availability](https://support.claude.com/en/articles/14604842)) | `anthropic.claude-mythos-5-2` | Active (verification required) |
337339| Claude Fable 5.1 | `anthropic.claude-fable-5-1` | Open |
338340| Claude Mythos 5.1 ([limited availability](https://support.claude.com/en/articles/14604842)) | `anthropic.claude-mythos-5-1` | Active (verification required) |
339341| Claude Fable 5 | `anthropic.claude-fable-5` | Open |
from line 386
384386* **Global:** dynamic routing across all available regions for maximum availability. No pricing premium.
385387* **Regional:** the endpoint resolves to the single AWS region you specify, for data-residency requirements. Regional endpoints carry a 10 percent pricing premium over global endpoints. To route across multiple regions within a geography, use an [inference profile](https://docs.aws.amazon.com/bedrock/latest/userguide/cross-region-inference.html) (US, EU, JP, or AU). Regions marked **In-region only** in the table support direct single-region routing without an inference profile.
386388
387The global endpoint is available for Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 5.5, and Claude Haiku 4.5.
389The global endpoint is available for Claude Fable 5.2, Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 5.5, and Claude Haiku 4.5.
388390
389391| AWS region | Location | Endpoint types |
390392| ---------------- | ------------------------- | -------------------------- |
build-with-claude/compaction-background Changed · +1 / -1 lines
from line 562
562562| Status | Cloud platforms | Models |
563563| ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
564564| Beta | Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), Claude Mythos Preview, [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview), [Claude Opus 4.6](https://platform.claude.com/docs/en/models/opus-4-6/overview), [Claude Sonnet 4.6](https://platform.claude.com/docs/en/models/sonnet-4-6/overview) |
565| Beta | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview) |
565| Beta | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview) |
566566
567567### Required beta headers
568568
build-with-claude/compaction-keep-recent-turns Changed · +1 / -1 lines
from line 517
517517| Status | Cloud platforms | Models |
518518| ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
519519| Beta | Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), Claude Mythos Preview, [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview), [Claude Opus 4.6](https://platform.claude.com/docs/en/models/opus-4-6/overview), [Claude Sonnet 4.6](https://platform.claude.com/docs/en/models/sonnet-4-6/overview) |
520| Beta | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview) |
520| Beta | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview) |
521521
522522### Required beta headers
523523
build-with-claude/compaction-on-demand Changed · +1 / -1 lines
from line 845
845845| Status | Cloud platforms | Models |
846846| ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
847847| Beta | Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), Claude Mythos Preview, [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview), [Claude Opus 4.6](https://platform.claude.com/docs/en/models/opus-4-6/overview), [Claude Sonnet 4.6](https://platform.claude.com/docs/en/models/sonnet-4-6/overview) |
848| Beta | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview) |
848| Beta | [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview), [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview), [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview), [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview), [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview), [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview), [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview), [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview), [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview), [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview) |
849849
850850### Required beta headers
851851
build-with-claude/effort Changed · +1 / -1 lines
from line 410
410410
411411### Per-message effort (beta)
412412
413Per-message effort is in beta. On the Claude API and [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), it’s available on Claude Fable 5.1, Claude Mythos 5.1, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, and Claude Haiku 5.5. On the Claude API, it’s also available on Claude Fable 5.2 and Claude Mythos 5.2. On Claude Models on Google Cloud (Google managed), it’s also available on Claude Fable 5.2 and Claude Mythos 5.2. On [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) and [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), it’s available on Claude Fable 5.2, Claude Fable 5.1, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, and Claude Haiku 5.5. On [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), it’s available on Claude Fable 5.1, Claude Mythos 5.1, and Claude Opus 5.5. It requires the [beta header](https://platform.claude.com/docs/en/api/beta-headers) `mid-conversation-output-config-2026-07-01`. With the Amazon Bedrock [InvokeModel API](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy), it’s available on Claude Fable 5.1 and Claude Opus 5.5, and you send that value in the `anthropic_beta` array of the request body instead.
413Per-message effort is in beta. On the Claude API and [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), it’s available on Claude Fable 5.1, Claude Mythos 5.1, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, and Claude Haiku 5.5. On the Claude API, it’s also available on Claude Fable 5.2 and Claude Mythos 5.2. On Claude Models on Google Cloud (Google managed), it’s also available on Claude Fable 5.2 and Claude Mythos 5.2. On [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) and [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), it’s available on Claude Fable 5.2, Claude Fable 5.1, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, and Claude Haiku 5.5. On [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), it’s available on Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, Claude Mythos 5.1, and Claude Opus 5.5. It requires the [beta header](https://platform.claude.com/docs/en/api/beta-headers) `mid-conversation-output-config-2026-07-01`. With the Amazon Bedrock [InvokeModel API](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy), it’s available on Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, and Claude Opus 5.5, and you send that value in the `anthropic_beta` array of the request body instead.
414414
415415Without the beta value, a per-message `output_config` returns a 400 error: `messages.N.output_config: Extra inputs are not permitted`, where `N` is the index of the `system` message in `messages`. With the beta value, models without per-message effort, including Claude Fable 5, return a 400 error: `output_config.effort requires a model that supports per-turn effort; this model does not`. On Amazon Bedrock, those models and Claude Opus 5 return the `Extra inputs are not permitted` error instead. On Claude Sonnet 5.5 with `thinking: {"type": "between_tools"}` and on Claude Haiku 5.5 with `thinking: {"type": "disabled"}`, effort can’t change mid-conversation: a per-message `output_config.effort` that differs from the level in effect returns a 400 error. To vary effort for each turn, use adaptive thinking.
416416
cli-sdks-libraries/cli/quickstart Changed · +1 / -1 lines
from line 32
3232 For Linux environments, download the release binary directly.
3333
3434 ```bash
35 VERSION=2.7.1
35 VERSION=2.8.0
3636 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
3737 case $(uname -m) in
3838 x86_64) ARCH=amd64 ;;
cli-sdks-libraries/overview Changed · +1 / -1 lines
from line 60
6060
6161| Tool | Latest version | Package |
6262| ---------- | -------------- | ----------------------------------------------------------------------------------------------------------- |
63| ant CLI | `2.7.1` | [`github.com/anthropics/anthropic-cli`](https://github.com/anthropics/anthropic-cli/releases) |
63| ant CLI | `2.8.0` | [`github.com/anthropics/anthropic-cli`](https://github.com/anthropics/anthropic-cli/releases) |
6464| Python | `2.7.0` | [`anthropic` on PyPI](https://pypi.org/project/anthropic/) |
6565| TypeScript | `1.7.0` | [`@anthropic-ai/sdk`](https://www.npmjs.com/package/@anthropic-ai/sdk) |
6666| C# | `13.7.0` | [`Anthropic`](https://www.nuget.org/packages/Anthropic) |
get-started Changed · +2 / -2 lines
from line 33
3333 For Linux environments, download the release binary directly.
3434
3535 ```bash
36 VERSION=2.7.1
36 VERSION=2.8.0
3737 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
3838 case $(uname -m) in
3939 x86_64) ARCH=amd64 ;;
from line 180
180180 For Linux environments, download the release binary directly.
181181
182182 ```bash
183 VERSION=2.7.1
183 VERSION=2.8.0
184184 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
185185 case $(uname -m) in
186186 x86_64) ARCH=amd64 ;;
managed-agents/quickstart Changed · +2 / -2 lines
from line 83
8383 For Linux environments, download the release binary directly.
8484
8585 ```bash
86 VERSION=2.7.1
86 VERSION=2.8.0
8787 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
8888 case $(uname -m) in
8989 x86_64) ARCH=amd64 ;;
from line 152
152152 For Linux environments, download the release binary directly.
153153
154154 ```bash
155 VERSION=2.7.1
155 VERSION=2.8.0
156156 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
157157 case $(uname -m) in
158158 x86_64) ARCH=amd64 ;;
managed-agents/self-hosted-sandboxes-workers Changed · +1 / -1 lines
from line 463
463463
464464 ```dockerfile
465465 FROM your-base-image
466 ARG ANT_VERSION=2.7.1
466 ARG ANT_VERSION=2.8.0
467467 ARG TARGETARCH
468468 RUN ARCH=$([ "$TARGETARCH" = "arm64" ] && echo arm64 || echo amd64) && \
469469 curl -fsSL "https://github.com/anthropics/anthropic-cli/releases/download/v${ANT_VERSION}/ant_${ANT_VERSION}_linux_${ARCH}.tar.gz" \
models/overview Changed · +2 / -2 lines
from line 39
3939| Training data cutoff | Jun 2026 | Jun 2026 | Jun 2026 | Jun 2026 |
4040| [Retirement](https://platform.claude.com/docs/en/about-claude/model-deprecations) | Not sooner than November 9, 2027 | Not sooner than September 22, 2027 | Not sooner than September 28, 2027 | Not sooner than October 7, 2027 |
4141| Claude API alias | `claude-fable-5-2` | `claude-opus-5-5` | `claude-sonnet-5-5` | `claude-haiku-5-5` |
42| [Amazon Bedrock ID](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | — | `anthropic.claude-opus-5-5` | `anthropic.claude-sonnet-5-5` | `anthropic.claude-haiku-5-5` |
42| [Amazon Bedrock ID](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-fable-5-2` | `anthropic.claude-opus-5-5` | `anthropic.claude-sonnet-5-5` | `anthropic.claude-haiku-5-5` |
4343| [Claude Models on Google Cloud (Google managed) ID](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) | `claude-fable-5-2` | `claude-opus-5-5` | `claude-sonnet-5-5` | `claude-haiku-5-5` |
44| [Microsoft Foundry ID](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | — | `claude-opus-5-5` | `claude-sonnet-5-5` | `claude-haiku-5-5` |
44| [Microsoft Foundry ID](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) | `claude-fable-5-2` | `claude-opus-5-5` | `claude-sonnet-5-5` | `claude-haiku-5-5` |
4545| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-2` | `claude-opus-5-5` | `claude-sonnet-5-5` | `claude-haiku-5-5` |
4646| [Claude Models on Google Cloud (Anthropic managed) ID](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | `claude-fable-5-2` | `claude-opus-5-5` | `claude-sonnet-5-5` | `claude-haiku-5-5` |
4747