The smartest Anthropic model is Claude Opus 5, scoring 60.7 on the Artificial Analysis Intelligence Index. Claude Fable 5 (59.9) and Claude Fable 5 (batch) (59.9) round out the top three.
The smartest AI models ranked by the Artificial Analysis Intelligence Index — a composite of reasoning, knowledge, math and science benchmarks. These are the most intelligent large language models available today.
The smartest Anthropic model is Claude Opus 5, scoring 60.7 on the Artificial Analysis Intelligence Index. Claude Fable 5 (59.9) and Claude Fable 5 (batch) (59.9) round out the top three.
Claude Fable 5 (59.9) is the closest alternative on this metric, followed by Claude Fable 5 (batch) (59.9). See the full ranking above for the tradeoffs.
modelgrep tracks 26 Anthropic models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by Claude Opus 5. 23 of them qualify for this ranking.