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## Choosing a model ### Claude Fable 5 and Claude Mythos 5 ### Latest models comparison ## Prompt and output performance ## Migrating to Claude Opus 5 ## Get started with Claude
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Claude Fable 5 (`claude-fable-5`) is Anthropic's most capable widely released model. Claude Mythos 5 (`claude-mythos-5`) shares Claude Fable 5's specs and pricing and joins the invitation-only Claude Mythos Preview (`claude-mythos-preview`) within [Project Glasswing](https://anthropic.com/glasswing). See [Introducing Claude Fable 5 and Claude Mythos 5](https://platform.claude.com/docs/en/about-claude/models/introducing-claude-fable-5-and-claude-mythos-5) for launch details and API changes. -Claude Fable 5 is generally available on the Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry beginning June 9, 2026. Claude Mythos 5 is not generally available: it is offered in limited availability to approved customers in [Project Glasswing](https://anthropic.com/glasswing), beginning the same day. For access, contact your Anthropic, AWS, or Google Cloud account team. +Claude Fable 5 is available on the Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry beginning June 9, 2026. Claude Mythos 5 is offered only to approved customers in [Project Glasswing](https://anthropic.com/glasswing), beginning the same day. For access, contact your Anthropic, AWS, or Google Cloud account team. ### Latest models comparison
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## Choosing a model ### Claude Fable 5 and Claude Mythos 5 ### Latest models comparison ## Prompt and output performance ## Migrating to Claude Opus 5 ## Get started with Claude
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---
title: Models overview
url: https://platform.claude.com/docs/en/about-claude/models/overview
description: Claude is a family of state-of-the-art large language models developed by Anthropic. This guide introduces the available models and compares their performance.
---
## Choosing a model
If you're unsure which model to use, start with **Claude Opus 5** for complex agentic coding and enterprise work. For workloads that need the highest available capability, use [Claude Fable 5](https://platform.claude.com/docs/en/about-claude/models/overview#claude-fable-5-and-claude-mythos-5).
All current Claude models support text and image input, text output, multilingual capabilities, and vision. Models are available through the Claude API, [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Google Cloud](https://platform.claude.com/docs/en/build-with-claude/claude-on-vertex-ai), and [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry).
Once you've picked a model, [learn how to make your first API call](https://platform.claude.com/docs/en/get-started).
### Claude Fable 5 and Claude Mythos 5
Claude Fable 5 (`claude-fable-5`) is Anthropic's most capable widely released model. Claude Mythos 5 (`claude-mythos-5`) shares Claude Fable 5's specs and pricing and joins the invitation-only Claude Mythos Preview (`claude-mythos-preview`) within [Project Glasswing](https://anthropic.com/glasswing). See [Introducing Claude Fable 5 and Claude Mythos 5](https://platform.claude.com/docs/en/about-claude/models/introducing-claude-fable-5-and-claude-mythos-5) for launch details and API changes.
Claude Fable 5 is generally available on the Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry beginning June 9, 2026. Claude Mythos 5 is not generally available: it is offered in limited availability to approved customers in [Project Glasswing](https://anthropic.com/glasswing), beginning the same day. For access, contact your Anthropic, AWS, or Google Cloud account team.
### Latest models comparison
| Feature | Claude Fable 5 | Claude Opus 5 | Claude Sonnet 5 | Claude Haiku 4.5 |
| ----------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------- |
| **Description** | Next-generation intelligence for long-running agents | For complex agentic coding and enterprise work | The best combination of speed and intelligence | The fastest model with near-frontier intelligence |
| **Claude API ID** | claude-fable-5 | claude-opus-5 | claude-sonnet-5 | claude-haiku-4-5-20251001 |
| **Claude API alias** | claude-fable-5 | claude-opus-5 | claude-sonnet-5 | claude-haiku-4-5 |
| **AWS Bedrock ID** | anthropic.claude-fable-53 | anthropic.claude-opus-53 | anthropic.claude-sonnet-53 | anthropic.claude-haiku-4-5-20251001-v1:0 |
| **Google Cloud ID** | claude-fable-5 | claude-opus-5 | claude-sonnet-5 | claude-haiku-4-5\@20251001 |
| **Pricing**1 | $10 / input MTok $50 / output MTok | $5 / input MTok $25 / output MTok | $2 / input MTok $10 / output MTok | $1 / input MTok $5 / output MTok |
| **[Extended thinking (`thinking.type: "enabled"`)](https://platform.claude.com/docs/en/build-with-claude/extended-thinking)** | No | No | No | Yes |
| **[Adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/thinking)** | Yes (always on) | Yes | Yes | No |
| **Comparative latency** | Slower | Moderate | Fast | Fastest |
| **Context window** | <Tooltip tooltipContent="~555k words \ ~2.5M unicode characters. Claude Fable 5 uses the tokenizer introduced with Claude Opus 4.7; compared to models before Claude Opus 4.7, the same text produces roughly 30% more tokens. The exact increase depends on the content.">1M tokens</Tooltip> | <Tooltip tooltipContent="~555k words \ ~2.5M unicode characters">1M tokens</Tooltip> | <Tooltip tooltipContent="~555k words \ ~2.5M unicode characters">1M tokens</Tooltip> | <Tooltip tooltipContent="~150k words \ ~680k unicode characters">200k tokens</Tooltip> |
| **Max output** | 128k tokens | 128k tokens | 128k tokens | 64k tokens |
| **Reliable knowledge cutoff** | Jan 20262 | May 20262 | Jan 20262 | Feb 2025 |
| **Training data cutoff** | Jan 2026 | May 2026 | Jan 2026 | Jul 2025 |
*1 See [Pricing](https://platform.claude.com/docs/en/about-claude/pricing) for complete pricing information including Batch API discounts and prompt caching rates.*
*2 **Reliable knowledge cutoff** indicates the date through which a model's knowledge is most extensive and reliable. **Training data cutoff** is the broader date range of training data used. For more information, see [Anthropic's Transparency Hub](https://www.anthropic.com/transparency).*
*3 Claude Fable 5, Claude Opus 5, and Claude Sonnet 5 are available on Bedrock through [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) (the Messages-API Bedrock endpoint).*
<Info>
Claude Mythos 5 and Claude Mythos Preview are offered separately for defensive cybersecurity workflows as part of [Project Glasswing](https://anthropic.com/glasswing). Access is invitation-only and there is no self-serve sign-up.
</Info>
<Note>
Every Claude model ID is a pinned snapshot. Models with a date in the ID (for example,
`20250929`
) are fixed to that specific release. Starting with the Claude 4.6 generation, model IDs use a dateless format that is also a pinned snapshot, not an evergreen pointer. For models before the 4.6 generation, entries in the Claude API alias column are convenience pointers that resolve to a dated model ID. For details on the naming convention and how versioning works, see
[Model IDs and versioning](https://platform.claude.com/docs/en/about-claude/models/model-ids-and-versions)
.
</Note>
<Note>
Starting with
**Claude Sonnet 4.5 and all subsequent models**
(including Claude Sonnet 4.6), Bedrock offers two endpoint types:
**global endpoints**
(dynamic routing for maximum availability) and
**regional endpoints**
(guaranteed data routing through specific geographic regions). Google Cloud offers three endpoint types: global endpoints,
**multi-region endpoints**
(dynamic routing within a geographic area), and regional endpoints. For more information, see
[Cloud platform pricing](https://platform.claude.com/docs/en/about-claude/pricing#cloud-platform-pricing)
.
</Note>
<Note>
**Claude Platform on AWS**
uses the same model IDs as the Claude API (for example,
`claude-opus-4-6`
), not Bedrock-style IDs. Model lifecycle on Claude Platform on AWS follows Anthropic's first-party
[Model deprecations](https://platform.claude.com/docs/en/about-claude/model-deprecations)
, not Bedrock's. See
[Available models](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws#available-models)
for the model list.
</Note>
<Tip>
You can query model capabilities and token limits programmatically with the [Models API](https://platform.claude.com/docs/en/api/models/list). The response includes `max_input_tokens`, `max_tokens`, and a `capabilities` object for every available model.
</Tip>
<Note>
On Claude Opus 4.8, the `effort` parameter defaults to `high` on all surfaces, including the Claude API, Claude Code, and claude.ai. On Claude Opus 5 and Claude Sonnet 5, it defaults to `high` on the Claude API and Claude Code. Set `effort` explicitly to use a different level. See [Effort](https://platform.claude.com/docs/en/build-with-claude/effort) for guidance on choosing a level.
</Note>
<Note>
The Max output values in the table apply to the synchronous Messages API. On the [Message Batches API](https://platform.claude.com/docs/en/build-with-claude/batch-processing#extended-output-beta), Claude Opus 5, Opus 4.8, Opus 4.7, Opus 4.6, Sonnet 5, and Sonnet 4.6 support up to 300k output tokens by using the `output-300k-2026-03-24` beta header.
</Note>
<AccordionGroup>
<Accordion title="Legacy models">
The following models are still available. Consider migrating to current models for improved performance:
| Feature | Claude Opus 4.8 | Claude Opus 4.7 | Claude Opus 4.6 | Claude Sonnet 4.6 | Claude Sonnet 4.5 | Claude Opus 4.5 |
| ----------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------- |
| **Claude API ID** | claude-opus-4-8 | claude-opus-4-7 | claude-opus-4-6 | claude-sonnet-4-6 | claude-sonnet-4-5-20250929 | claude-opus-4-5-20251101 |
| **Claude API alias** | claude-opus-4-8 | claude-opus-4-7 | claude-opus-4-6 | claude-sonnet-4-6 | claude-sonnet-4-5 | claude-opus-4-5 |
| **AWS Bedrock ID** | anthropic.claude-opus-4-86 | anthropic.claude-opus-4-76 | anthropic.claude-opus-4-6-v1 | anthropic.claude-sonnet-4-6 | anthropic.claude-sonnet-4-5-20250929-v1:0 | anthropic.claude-opus-4-5-20251101-v1:0 |
| **Google Cloud ID** | claude-opus-4-8 | claude-opus-4-7 | claude-opus-4-6 | claude-sonnet-4-6 | claude-sonnet-4-5\@20250929 | claude-opus-4-5\@20251101 |
| **Pricing** | $5 / input MTok $25 / output MTok | $5 / input MTok $25 / output MTok | $5 / input MTok $25 / output MTok | $3 / input MTok $15 / output MTok | $3 / input MTok $15 / output MTok | $5 / input MTok $25 / output MTok |
| **[Extended thinking (`thinking.type: "enabled"`)](https://platform.claude.com/docs/en/build-with-claude/extended-thinking)** | No | No | Yes (deprecated) | Yes (deprecated) | Yes | Yes |
| **[Adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/thinking)** | Yes | Yes | Yes | Yes | No | No |
| **Comparative latency** | Moderate | Moderate | Moderate | Fast | Fast | Moderate |
| **Context window** | <Tooltip tooltipContent="~555k words \ ~2.5M unicode characters">1M tokens</Tooltip> | <Tooltip tooltipContent="~555k words \ ~2.5M unicode characters (Opus 4.7 uses a new tokenizer)">1M tokens</Tooltip> | <Tooltip tooltipContent="~750k words \ ~3.4M unicode characters">1M tokens</Tooltip> | <Tooltip tooltipContent="~750k words \ ~3.4M unicode characters">1M tokens</Tooltip> | <Tooltip tooltipContent="~150k words \ ~680k unicode characters">200k tokens</Tooltip> | <Tooltip tooltipContent="~150k words \ ~680k unicode characters">200k tokens</Tooltip> |
| **Max output** | 128k tokens | 128k tokens | 128k tokens | 128k tokens | 64k tokens | 64k tokens |
| **Reliable knowledge cutoff** | Jan 20265 | Jan 20265 | May 20255 | Aug 20255 | Jan 20255 | May 20255 |
| **Training data cutoff** | Jan 2026 | Jan 2026 | Aug 2025 | Jan 2026 | Jul 2025 | Aug 2025 |
*5 **Reliable knowledge cutoff** indicates the date through which a model's knowledge is most extensive and reliable. **Training data cutoff** is the broader date range of training data used.*
*6 Claude Opus 4.8 and Claude Opus 4.7 are available on Bedrock through [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) (the Messages-API Bedrock endpoint).*
</Accordion>
</AccordionGroup>
## Prompt and output performance
Current Claude models excel in:
* **Performance:** Top-tier results in reasoning, coding, multilingual tasks, long-context handling, honesty, and image processing. See [Prompting best practices](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices) for general and model-specific prompting guidance.
* **Engaging responses:** Claude models are ideal for applications that require rich, human-like interactions.
* If you prefer more concise responses, you can adjust your prompts to guide the model toward the desired output length. Refer to the [prompt engineering guides](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering) for details.
* For prompting best practices, see [Prompting best practices](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices).
* **Output quality:** When migrating from a previous model generation, you may notice larger improvements in overall performance.
## Migrating to Claude Opus 5
If you're currently using Claude Opus 4.8 or earlier Claude models, see [Migrating to Claude Opus 5](https://platform.claude.com/docs/en/about-claude/models/migration-guide#migrating-from-claude-opus-4-8-to-claude-opus-5).
## Get started with Claude
If you're ready to start exploring what Claude can do for you, dive in! Whether you're a developer looking to integrate Claude into your applications or a user wanting to experience the power of AI firsthand, the following resources can help.
<Note>
Looking to chat with Claude? Visit
[claude.ai](https://claude.ai)
!
</Note>
<CardGroup cols={3}>
<Card title="Intro to Claude" icon="check" href="https://platform.claude.com/docs/en/intro">
Explore Claude's capabilities and development flow.
</Card>
<Card title="Quickstart" icon="lightning" href="https://platform.claude.com/docs/en/get-started">
Learn how to make your first API call in minutes.
</Card>
<Card title="Claude Console" icon="code" href="https://platform.claude.com/">
Craft and test powerful prompts directly in your browser.
</Card>
</CardGroup>
If you have any questions or need assistance, don't hesitate to reach out to the [support team](https://support.claude.com/) or consult the [Discord community](https://www.anthropic.com/discord).