Claude Opus 5.5 (max): benchmark scores, price and ranking
Claude Opus 5.5 (max) from Anthropic ranks #1 of 741 LLMs on the LLMs Tiger aggregate benchmark score (64.2), based on 21 benchmark results captured up to 2026-10-05.
- Organisation
- Anthropic
- Type
- Frontier model
- Open weights
- No
- Released
- 2026-09-22 (source: curated)
- Cheapest API price
- $4.00 in / $20.00 out per million tokens (via anthropic, observed 2026-10-05T21:47Z)
- Aggregate rank
- #1 of 741 (score 64.2)
Relative to other models, Claude Opus 5.5 (max) is strongest on DTBench (#1 of 149) and weakest on APEX-Agents (#2 of 14).
Claude Opus 5.5 (max) benchmark results
Claude Opus 5.5 (max) is also listed at 6 other reasoning-effort settings; this page shows the highest-effort row, which is the one the leaderboard keeps by default.
Models ranked nearby
- #2 GPT-6 Astra (max) (63.8)
- #3 Claude Fable 5.1 (max) (61.9)
- #4 Claude Sonnet 5.5 (max) (60.8)
Compare it on the live leaderboard → · How the aggregate score works