> Claude Opus 5 is a closed AI model from Anthropic, released 24 Jul 2026. Index score 187 (GPT-4 = 100), rank 5 of 229 ranked models. API price $5.0 in / $25 out per million tokens, 1M context. [Models](https://themodelindex.org/models/) /[Anthropic](https://themodelindex.org/labs/anthropic/) # Claude Opus 5 Anthropic Released 24 Jul 2026 Closed Flagship Date verified [Compare](https://themodelindex.org/compare/claude-opus-5-vs-kimi-k3/) [Announcement](https://www.anthropic.com/news/claude-opus-5) 187176–198 Index score #5 of 229 models 4/ 8 Core tests taken 4 of 6 areas · plus 19 anchor tests Frontier Versus the frontier at release set or matched the record Replaced by [Claude Opus 5.5](https://themodelindex.org/models/claude-opus-5-5/) $5.0/ $25 Price per million tokens input / output, list price 1M Context window tokens it reads at once ## Where it sits · on the frontier _Chart: Model Index score of every scored model since late 2022, with the best closed and best open model over time_ Among the first models to reach this score. ## Test results · by area · tick = best by any model Show 16 anchor tests Reasoning & knowledge evidence GPQA Diamond 94% Humanity's Last Exam no result Maths evidence FrontierMath T1-3 86% Coding evidence SWE-bench Verified no result Terminal-Bench no result Agents evidence APEX-Agents 66% Novel problems evidence ARC-AGI-2 90% Long tasks no evidence yet METR time horizon no result Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above. ## What others say · rank on each leaderboard The Model Index independent tests, our method #5 of 219 · 187 LMArena · Maths maths questions in chat #2 of 373 · 1522 Epoch Capabilities Index overall capability from many benchmarks #5 of 239 · 162.9 LMArena · Documents working with long documents #1 of 41 · 1516 LMArena · Text overall chat quality, judged by people #13 of 388 · 1491 LMArena · Creative writing creative writing #13 of 386 · 1472 LMArena · Coding coding questions in chat #15 of 383 · 1534 LMArena · WebDev building web apps and front ends #6 of 123 · 1694 LMArena · Vision understanding images #12 of 149 · 1289 LiveBench · Overall overall, with fresh questions to limit contamination #10 of 58 · 80.1 Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source. ## Best at · top three among current models 1st working with long documents LMArena · Documents 2nd maths questions in chat LMArena · Maths 3rd understanding images LMArena · Vision 3rd agentic coding questions LiveBench · Agentic Coding 3rd ARC-AGI-2 Epoch AI · independent Where this model places in the top three of today's models, on category leaderboards and on our core tests. ## Where to use it · prices checked 1 Oct 2026 #### From the lab Claude app · subscription ↗ Claude API API ↗ #### API providers · 5 · per million tokens, in / out C Claude Platform on AWS $5.0 / $25 cheapest G Google $5.5 / $27.5 ↗ A Amazon Bedrock $5.5 / $27.5 ↗ A Azure $5.5 / $27.5 ↗ A Anthropic $10 / $50 ↗ Provider prices come from OpenRouter's live listing; going direct to a provider can differ. Subscriptions are the lab's own apps. ## Facts and sources Released 24 Jul 2026 Announcement [anthropic.com ↗](https://www.anthropic.com/news/claude-opus-5) Release entry Claude Opus 5 Scored as Claude Opus 5 Artificial Analysis index – Output speed – Hugging Face closed weights ## Anthropic releases · around this one Claude Mythos 5 Closed 9 JUN 2026 Claude Sonnet 5 Closed 30 JUN 2026 index 169 Claude Opus 5 Closed 24 JUL 2026 index 187 Claude Fable 5.1 Closed 1 SEP 2026 index 192 Claude Mythos 5.1 Closed 1 SEP 2026 --- Source: https://themodelindex.org/models/claude-opus-5/ · The Model Index · data as of 2026-10-01