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## Latest models ## All models ## Compare models
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2020 Migration guide
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23## Compare models
23## Latest models
2424
25If you’re unsure which model to use, start with [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview) for most workloads. Use [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview) for demanding reasoning and long-horizon agentic work, or when your evals on Claude Opus 5.5 at higher effort still fall short. All current models support text and image input, text output, multilingual capabilities, vision, and tool use. Each model’s page lists the platforms it’s available on.
25If you’re unsure which model to use, start with [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview) for most workloads. Use [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview) for demanding reasoning and long-horizon agentic work, or when your evals on Claude Opus 5.5 at higher effort still fall short. All current models support text and image input, text output, multilingual capabilities, vision, and tool use.
2626
2727| Feature | Claude Fable 5.2 | Claude Opus 5.5 | Claude Sonnet 5.5 | Claude Haiku 5.5 |
2828| :------------------------------------------------------------------------------------------------------------------------------------------------------------ | :-------------------------------------------------------------------------------- | :------------------------------------------------------------------------------ | :---------------------------------------------------------------------------------- | :--------------------------------------------------------------------------------------- |
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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-fable-5-2` | `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) | `global.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` |
4444| [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` |
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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
4848* **Comparative latency:** Relative to the current lineup. Actual latency depends on prompt length, output length, and thinking effort.
49* **Pricing:** Base price per million tokens. Batch API requests are 50% off; prompt cache reads cost 10% of the base input price (2.5% on Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.5). See Pricing for cache writes, long-context, and per-platform pricing.
49* **Pricing:** Base price per million tokens. Batch API requests are 50% off; prompt cache reads cost 10% of the base input price (2.5% on Claude Fable 5.2 and Claude Fable 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.5). See Pricing for cache writes, long-context, and per-platform pricing.
5050* **Claude API ID:** Every Claude model ID is a pinned snapshot, including the dateless IDs used from the 4.6 generation on.
5151* **Thinking:** Adaptive thinking lets the model decide how much to think, steered by effort. Extended thinking is the manual thinking.type “enabled” + budget\_tokens mode on earlier models; it is deprecated on Claude Opus 4.6 and Claude Sonnet 4.6 and not accepted on later models.
5252* **Default effort:** The effort parameter’s default on the Claude API. Set effort explicitly to use a different level.
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5555* **Reliable knowledge cutoff:** The date through which the model’s knowledge is most extensive and reliable. Training data cutoff (under Additional details) is the broader range of data used. See Anthropic’s Transparency Hub for details.
5656* **Retirement:** Anthropic’s commitment for the platforms that Anthropic operates. Partner-operated platforms set their own dates.
5757* **Claude API alias:** For models before the 4.6 generation, the alias is a convenience pointer that resolves to the dated ID. Dateless IDs are their own pinned snapshot; the alias row repeats them.
58* **Amazon Bedrock ID:** The ID on Bedrock’s Messages-API endpoint (Claude Opus 4.7 and later, plus Claude Haiku 4.5); a model offered only through Bedrock’s InvokeModel integration shows that ID instead. Bedrock offers global endpoints (dynamic routing) and regional endpoints (guaranteed data routing) for Claude Sonnet 4.5 and later, and sets its own lifecycle dates.
58* **Amazon Bedrock ID:** The ID on Bedrock’s bedrock-mantle endpoint; a model that Bedrock serves only on its bedrock-runtime endpoint shows its inference profile ID instead. Bedrock offers global endpoints (dynamic routing) and regional endpoints (guaranteed data routing) for Claude Sonnet 4.5 and later, and sets its own lifecycle dates.
5959* **Claude Models on Google Cloud (Google managed) ID:** Claude Models on Google Cloud (Google managed) offers global, multi-region, and regional endpoints, and sets its own lifecycle dates.
6060* **Microsoft Foundry ID:** Foundry deployments default to the Claude API model ID (the alias, where one exists); the deployment name is what you send. Foundry follows the Claude API lifecycle schedule.
6161* **Claude Platform on AWS ID:** Claude Platform on AWS uses the Claude API model IDs (the dateless form where the Claude API has an alias), not Bedrock-style IDs, and follows Anthropic’s first-party model lifecycle.
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6262
6363See [Model IDs and versioning](https://platform.claude.com/docs/en/about-claude/models/model-ids-and-versions) and [Pricing](https://platform.claude.com/docs/en/about-claude/pricing).
6464
65Legacy models (still available): [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](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), [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 Opus 4.5](https://platform.claude.com/docs/en/models/opus-4-5/overview), [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview), [Claude Sonnet 4.6](https://platform.claude.com/docs/en/models/sonnet-4-6/overview), [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview).
65Once you’ve picked a model, [learn how to make your first API call](https://platform.claude.com/docs/en/get-started). To understand how model IDs, aliases, and snapshots work, see [Model IDs and versioning](https://platform.claude.com/docs/en/about-claude/models/model-ids-and-versions). For the reliable-knowledge and training-data cutoffs behind each model, see Anthropic’s [Transparency Hub](https://www.anthropic.com/transparency).
6666
67Once you’ve picked a model, [learn how to make your first API call](https://platform.claude.com/docs/en/get-started). To understand how model IDs, aliases, and snapshots work, see [Model IDs and versioning](https://platform.claude.com/docs/en/about-claude/models/model-ids-and-versions); for the reliable-knowledge and training-data cutoffs behind each model, see Anthropic’s [Transparency Hub](https://www.anthropic.com/transparency).
67## All models
68
69Older models might still be available, but where possible, you should default to the [latest models](https://platform.claude.com/docs/en/models/overview#latest-models-comparison). To move to a newer model, see the [migration guides](https://platform.claude.com/docs/en/about-claude/models/migration-guide). For retirement dates, see [model deprecations](https://platform.claude.com/docs/en/about-claude/model-deprecations).
70
71| Model | Capabilities: Context window | Capabilities: Max output | Base tokens: Input | Base tokens: Output |
72| :--------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :--------------------------- | :----------------------- | :----------------- | :------------------ |
73| [Claude Fable 5.2](https://platform.claude.com/docs/en/models/fable-5-2/overview) | 1M tokens | 128K tokens | $8 / MTok | $40 / MTok |
74| [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview) | 1M tokens | 128K tokens | $4 / MTok | $20 / MTok |
75| [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/overview) | 1M tokens | 128K tokens | $2 / MTok | $10 / MTok |
76| [Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview) | 1M tokens | 128K tokens | From $0.10 / MTok | From $0.50 / MTok |
77| [Claude Mythos 5.2](https://platform.claude.com/docs/en/models/mythos-5-2/overview) ([limited availability](https://support.claude.com/en/articles/14604842)) | 1M tokens | 128K tokens | $8 / MTok | $40 / MTok |
78| [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview) | 1M tokens | 128K tokens | $10 / MTok | $50 / MTok |
79| [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview) ([limited availability](https://support.claude.com/en/articles/14604842)) | 1M tokens | 128K tokens | $10 / MTok | $50 / MTok |
80| [Claude Fable 5](https://platform.claude.com/docs/en/models/fable-5/overview) | 1M tokens | 128K tokens | $10 / MTok | $50 / MTok |
81| [Claude Mythos 5](https://platform.claude.com/docs/en/models/mythos-5/overview) ([limited availability](https://support.claude.com/en/articles/14604842)) | 1M tokens | 128K tokens | $10 / MTok | $50 / MTok |
82| [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/overview) | 1M tokens | 128K tokens | $5 / MTok | $25 / MTok |
83| [Claude Opus 4.8](https://platform.claude.com/docs/en/models/opus-4-8/overview) | 1M tokens | 128K tokens | $5 / MTok | $25 / MTok |
84| [Claude Opus 4.7](https://platform.claude.com/docs/en/models/opus-4-7/overview) | 1M tokens | 128K tokens | $5 / MTok | $25 / MTok |
85| [Claude Opus 4.6](https://platform.claude.com/docs/en/models/opus-4-6/overview) | 1M tokens | 128K tokens | $5 / MTok | $25 / MTok |
86| [Claude Opus 4.5](https://platform.claude.com/docs/en/models/opus-4-5/overview) | 200K tokens | 64K tokens | $5 / MTok | $25 / MTok |
87| 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)) | 200K tokens | 32K tokens | $15 / MTok | $75 / MTok |
88| Claude Opus 4 ([retired, except on Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/about-claude/model-deprecations)) | 200K tokens | 32K tokens | $15 / MTok | $75 / MTok |
89| [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview) | 1M tokens | 128K tokens | $2 / MTok | $10 / MTok |
90| [Claude Sonnet 4.6](https://platform.claude.com/docs/en/models/sonnet-4-6/overview) | 1M tokens | 128K tokens | $3 / MTok | $15 / MTok |
91| [Claude Sonnet 4.5](https://platform.claude.com/docs/en/models/sonnet-4-5/overview) | 200K tokens | 64K tokens | $3 / MTok | $15 / MTok |
92| 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)) | 200K tokens | 64K tokens | $3 / MTok | $15 / MTok |
93| [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K tokens | 64K tokens | $1 / MTok | $5 / MTok |
94
95* **MTok:** Million tokens. $5 / MTok is $5 for every million tokens.
96* **Limited access:** Available only to organizations verified through Anthropic’s verification programs, such as the [Cyber Verification Program](https://support.claude.com/en/articles/14604842). To request access, apply to the program that covers your use case.
97* **Retired:** May still be available on other cloud platforms. See [Model deprecations](https://platform.claude.com/docs/en/about-claude/model-deprecations) for more.
6898
6999## Using the Models API
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