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ProteinGym Hard

Predicts mutation effects by ranking mutant protein sequences against wild type and comparing against laboratory measurements.

1 models

Higher is better.

  1. 1Claude Opus 5Anthropic47.7
Higher is better. Bar colour: blue proprietary, orange open weights, green other.

About this benchmark

Metric
Rank correlation
Tasks
Hard protein mutation-effect ranking tasks
Authors
Anthropic (2026)

Scores are as reported by model developers or evaluators and may use different settings (for example reasoning effort or tools). Compare with care.