overview changedmodels/opus-5/overview
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## How it compares to the current lineup ## Overview ## How it compares
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11---
22title: Claude Opus 5
33url: https://platform.claude.com/docs/en/models/opus-5/overview
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."
4description: "Claude Opus 5 reference: lifecycle status, model IDs on every platform, context window, output limits, pricing, and migration resources. Claude Opus 5 is a legacy model; Claude Opus 5.5 is the current Opus model."
55---
66
77**Legacy.** Released July 24, 2026.
88
9For complex agentic coding and enterprise work
9Although 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#migrating-from-claude-opus-5)
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
1311Model ID: `claude-opus-5`
1412
1513Context window: 1M tokens · Max output: 128K tokens · Input pricing: $5 / MTok · Output pricing: $25 / MTok
1614
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)
15[Announcement](https://www.anthropic.com/news/claude-opus-5)
1816
19## Overview
17## How it compares to the current lineup
2018
21Claude Opus 5 is a step-change improvement over Claude Opus 4.8, with the largest gains in deep reasoning, agentic and long-horizon tasks, and test-time compute scaling. This page summarizes everything new in Claude Opus 5, including mid-conversation tool changes and two breaking changes for code running on Claude Opus 4.8: thinking is on by default, and thinking can be disabled only at effort `high` or below.
22
23[What's new in Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/whats-new-opus-5)
24
25## How it compares
26
2719| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
2820| :-------------------------------------------------------------------------------- | :------ | :--------- | :----------- | :------------------- | :------------- | :--------------- |
2921| [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 |
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5345
5446### Pricing
5547
56| Feature | Value |
57| :------------------------------------------------------------------------------------- | :------------------------------------------------------------------ |
58| Input | $5 / MTok |
59| Output | $25 / MTok |
60| [5m cache write](https://platform.claude.com/docs/en/build-with-claude/prompt-caching) | $6.25 / MTok |
61| [1h cache write](https://platform.claude.com/docs/en/build-with-claude/prompt-caching) | $10 / MTok |
62| [Cache read](https://platform.claude.com/docs/en/build-with-claude/prompt-caching) | $0.50 / MTok |
63| [Batch API](https://platform.claude.com/docs/en/build-with-claude/batch-processing) | 50% discount on input and output |
64| Full price list | [Pricing](https://platform.claude.com/docs/en/about-claude/pricing) |
48| Feature | Value |
49| :------------------------------------------------------------------------------------- | :------------------------------- |
50| Input | $5 / MTok |
51| Output | $25 / MTok |
52| [5m cache write](https://platform.claude.com/docs/en/build-with-claude/prompt-caching) | $6.25 / MTok |
53| [1h cache write](https://platform.claude.com/docs/en/build-with-claude/prompt-caching) | $10 / MTok |
54| [Cache read](https://platform.claude.com/docs/en/build-with-claude/prompt-caching) | $0.50 / MTok |
55| [Batch API](https://platform.claude.com/docs/en/build-with-claude/batch-processing) | 50% discount on input and output |
6556
57[Full price list](https://platform.claude.com/docs/en/about-claude/pricing)
58
6659### Capabilities
6760
6861| Feature | Value |
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10598 <Card title="Prompting Claude Opus 5" icon="lightbulb" href="https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/prompting-claude-opus-5">
10699 Model-specific prompting guidance.
107 </Card>
108
109 <Card title="Effort" icon="sliders" href="https://platform.claude.com/docs/en/build-with-claude/effort">
110 Effort defaults to `high` on Claude Opus 5 and matters more than on earlier models. Choose a level per workload.
111 </Card>
112
113 <Card title="Adaptive thinking" icon="brain" href="https://platform.claude.com/docs/en/build-with-claude/thinking">
114 On by default. Disabling thinking requires effort `high` or below.
115 </Card>
116
117 <Card title="Fast mode" icon="lightning" href="https://platform.claude.com/docs/en/build-with-claude/fast-mode">
118 Lower-latency Claude Opus 5 on the Claude API (research preview), priced separately.
119100 </Card>
120101</CardGroup>
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