Anthropic · llm model
Claude Opus 5
Claude Opus 5 is an Anthropic language model released Jul 24, 2026; Anthropic's newest language model in our dataset is Claude Haiku 5.5. Proprietary, API access only. Anthropic's Claude Opus generation launched Jul 24, 2026, priced $5 / $25 per million tokens with a 1M-token context; its successor Claude Opus 5.5 is priced at $4 / $20. Verified against vendor sources on Oct 26, 2026.
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- ReleasedJul 24, 2026
- Context window1M1,000,000 tokens
- Max output128K128,000 tokens
- LicenceProprietaryProprietary (API)
Modalities not verified
Key facts
| Fact | Value | Source |
|---|---|---|
| Vendor | Anthropic | n/a |
| Released | Jul 24, 2026 Date of the launch entry in the Claude Platform release notes (API availability). | source |
| Status | generally available | n/a |
| API id | claude-opus-5 | source |
| Context window | 1,000,000 tokens (1M) | source |
| Max output | 128,000 tokens | source |
| Licence | Proprietary (API) | source |
| Pricing | $5 in / $25 out per 1M tokens | source |
Where Claude Opus 5 sits in our data
- Released Jul 24, 2026 (week 30 of 2026), in July 2026. Other models in our data released that month: Gemini Robotics ER 2, GPT-Live-Transcribe, GPT-Transcribe, Gemini 3.5 Flash-Lite, Gemini 3.6 Flash, Kimi K3.
- The previous Anthropic model we track is Claude Sonnet 5 (Jun 30, 2026), 24 days earlier.
- Of the 60 models in our data with a published context window, Claude Opus 5 has the number 31 largest (1M tokens). Our data is not every model on the market.
- Anthropic tools we cover: Claude Code, Claude.
- All releases by date: AI model releases by month · new AI models this week. Choosing for code: best LLM for coding.
How Claude Opus 5 differs from Claude Opus 5.5
Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.
- Listed price is $5 in and $25 out, against $4 in and $20 out for Claude Opus 5.5 (per 1M tokens).
- Both list a 1M-token context window.
- Claude Opus 5 came out 60 days before Claude Opus 5.5.
- Facts for the other model: Claude Opus 5.5.
What we tested
Nothing yet. We have not run Claude Opus 5 ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.
Sources
More from Anthropic
- Claude Opus 5.5 (Sep 22, 2026)
- Claude Sonnet 5 (Jun 30, 2026)
- Claude Mythos 5.1 (Sep 1, 2026)
- Claude Fable 5 (Jun 9, 2026)
- Claude Mythos 5 (Jun 9, 2026)
- Claude Fable 5.1 (Sep 15, 2026)
- Claude Opus 4.8 (May 28, 2026)