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11---
22title: Claude Opus 5
33url: https://platform.claude.com/docs/en/models/opus-5/overview
4description: "Claude Opus 5 at a glance: what it's for, model IDs on every platform, context window, output limits, pricing, availability, and the guides and resources for building with it."
4description: "Claude Opus 5 reference: lifecycle status, model IDs on every platform, context window, output limits, pricing, and migration resources. Claude Opus 5.5 is the current Opus model."
55---
66
7**Latest.** Released July 24, 2026.
7**Legacy.** Released July 24, 2026.
88
99For complex agentic coding and enterprise work
1010
11Although Claude Opus 5 is still available, you should consider migrating to Claude Opus 5.5 for improved performance. [See Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview) · [Migrate to Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/migration-guide)
12
1113Model ID: `claude-opus-5`
1214
1315Context window: 1M tokens · Max output: 128K tokens · Input pricing: $5 / MTok · Output pricing: $25 / MTok
1416
15[Announcement](https://www.anthropic.com/news/claude-opus-5) · [What’s new](https://platform.claude.com/docs/en/models/opus-5/whats-new-opus-5) · [Migration guide](https://platform.claude.com/docs/en/models/opus-5/migration-guide)
17[Announcement](https://www.anthropic.com/news/claude-opus-5) · [What’s new](https://platform.claude.com/docs/en/models/opus-5/whats-new-opus-5)
1618
1719## Overview
1820
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2224
2325## How it compares
2426
25| Model | Context | Max output | Price / MTok | Latency | Thinking | Default effort | Knowledge cutoff |
26| :-------------------------------------------------------------------------------- | :------ | :--------- | :----------- | :------- | :------------------- | :------------- | :--------------- |
27| [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview) | 1M | 128K | $10 / $50 | Slower | Adaptive (always on) | `high` | Jun 2026 |
28| **Claude Opus 5** (this model) | 1M | 128K | $5 / $25 | Moderate | Adaptive | `high` | May 2026 |
29| [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview) | 1M | 128K | $2 / $10 | Fast | Adaptive | `high` | Jan 2026 |
30| [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Fastest | Extended | — | Feb 2025 |
27| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
28| :-------------------------------------------------------------------------------- | :------ | :--------- | :----------- | :------------------- | :------------- | :--------------- |
29| [Claude Fable 5.1](https://platform.claude.com/docs/en/models/fable-5-1/overview) | 1M | 128K | $10 / $50 | Adaptive (always on) | `high` | Jun 2026 |
30| [Claude Opus 5.5](https://platform.claude.com/docs/en/models/opus-5-5/overview) | 1M | 128K | $4 / $20 | Adaptive (always on) | `medium` | Jun 2026 |
31| **Claude Opus 5** (this model) | 1M | 128K | $5 / $25 | Adaptive | `high` | May 2026 |
32| [Claude Sonnet 5](https://platform.claude.com/docs/en/models/sonnet-5/overview) | 1M | 128K | $2 / $10 | Adaptive | `high` | Jan 2026 |
33| [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Extended | — | Feb 2025 |
3134
3235* **Context:** 1M tokens is roughly 555k words or 2.5M Unicode characters on the current tokenizer (introduced with Claude Opus 4.7); models before it fit about 750k words in 1M tokens. 200k tokens is roughly 150k words.
33* **Max output:** Synchronous Messages API limit. On the Message Batches API, Claude Opus 5, Claude Sonnet 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, and Claude Sonnet 4.6 support up to 300k output tokens with the output-300k-2026-03-24 beta header.
34* **Price / MTok:** Input / output, base price per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1). See Pricing for the full list.
35* **Latency:** Comparative latency, relative to the current lineup, as published in the models overview. Actual latency depends on prompt length, output length, and thinking effort.
36* **Max output:** Synchronous Messages API limit. On the Message Batches API, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, and Claude Sonnet 4.6 support up to 300k output tokens with the output-300k-2026-03-24 beta header.
37* **Price / MTok:** Input / output, base price per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5). See Pricing for the full list.
3638* **Thinking:** Adaptive thinking lets the model decide how much to think, steered by effort. Extended thinking is the manual budget\_tokens mode on earlier models.
3739* **Default effort:** The effort parameter’s default on the Claude API. Models without a value don’t support the parameter.
3840* **Knowledge cutoff:** Reliable knowledge cutoff: the date through which the model’s knowledge is most extensive and reliable.
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7072| [Max output (Batch API, beta)](https://platform.claude.com/docs/en/build-with-claude/batch-processing#extended-output-beta) | 300K tokens |
7173| [Thinking](https://platform.claude.com/docs/en/build-with-claude/thinking) | Adaptive |
7274| [Default effort](https://platform.claude.com/docs/en/build-with-claude/effort) | `high` |
73| Comparative latency | Moderate |
7475| Input → output | Text and images → text |
7576| Reliable knowledge cutoff | May 2026 |
7677| Training data cutoff | May 2026 |
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7980
8081| Feature | Value |
8182| :---------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
82| [Status](https://platform.claude.com/docs/en/about-claude/model-deprecations) | Active (latest) |
83| [Status](https://platform.claude.com/docs/en/about-claude/model-deprecations) | Active (legacy) |
8384| Released | July 24, 2026 |
8485| Retirement | Not sooner than July 24, 2027 |
8586| Platforms | Claude API, [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Google Cloud](https://platform.claude.com/docs/en/build-with-claude/claude-on-vertex-ai), [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) |
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9394## Resources
9495
9596<CardGroup cols={3}>
97 <Card title="Migrate to Claude Opus 5.5" icon="arrows-left-right" href="https://platform.claude.com/docs/en/models/opus-5-5/migration-guide#migrating-from-claude-opus-5">
98 What changes when moving from Claude Opus 5 to Claude Opus 5.5.
99 </Card>
100
101 <Card title="Claude Opus 5.5" icon="arrow-right" href="https://platform.claude.com/docs/en/models/opus-5-5/overview">
102 The current Opus model: overview, specs, and resources.
103 </Card>
104
96105 <Card title="Prompting Claude Opus 5" icon="lightbulb" href="https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/prompting-claude-opus-5">
97106 Model-specific prompting guidance.
98107 </Card>