The smartest LLM is Claude Fable 5, scoring 64.9 on the Artificial Analysis Intelligence Index. Claude Opus 4.8 (61.4) and Claude Opus 4.7 (57.3) round out the top three.
The most capable AI models ranked by the Artificial Analysis Intelligence Index — a composite of reasoning, knowledge, math and science benchmarks. These are the highest-scoring large language models available today.
The smartest LLM is Claude Fable 5, scoring 64.9 on the Artificial Analysis Intelligence Index. Claude Opus 4.8 (61.4) and Claude Opus 4.7 (57.3) round out the top three.
Claude Opus 4.8 (61.4) is the closest alternative on this metric, followed by Claude Opus 4.7 (57.3). See the full ranking above for the tradeoffs.