Claude Solves 30% of Expert-Stumped Biology Problems in New Anthropic Benchmark

Anthropic's new BioMysteryBench gave Claude 99 open-ended biological research problems that had stumped human experts — and the model cracked roughly a third of them, raising pointed questions about where AI fits in the scientific discovery pipeline.

Anthropic published results from BioMysteryBench, a new evaluation that tests AI on exactly the kind of messy, open-ended research problems that benchmarks typically avoid. As @AnthropicAI detailed on its science blog, the benchmark consists of 99 problems drawn from real biological data — cases where domain experts had attempted analysis and gotten stuck. Claude solved roughly 30% of them.

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