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Anthropic Organic Chemistry V2 evaluation

Chemistry tasks covering spectroscopy, synthesis planning, reaction prediction, and chemical structure images.

1 models

Higher is better.

  1. 1Claude Opus 5Anthropic61.6
Higher is better. Bar colour: blue proprietary, orange open weights, green other.

About this benchmark

Metric
Task score
Tasks
Organic chemistry reasoning 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.