The best Anthropic model for science is Claude Opus 5, scoring 93.2% on GPQA Diamond — graduate-level physics, chemistry and biology. Claude Fable 5 (92.6%) and Claude Opus 4.8 (92.0%) round out the top three.
AI models ranked by GPQA Diamond — graduate-level physics, chemistry and biology questions written to be un-Googleable, so the score reflects reasoning from knowledge rather than retrieval. The best large language models for scientific research and hard-science work.
The best Anthropic model for science is Claude Opus 5, scoring 93.2% on GPQA Diamond — graduate-level physics, chemistry and biology. Claude Fable 5 (92.6%) and Claude Opus 4.8 (92.0%) round out the top three.
Claude Fable 5 (92.6%) is the closest alternative on this metric, followed by Claude Opus 4.8 (92.0%). See the full ranking above for the tradeoffs.
modelgrep tracks 17 Anthropic models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by Claude Opus 5. 13 of them qualify for this ranking.