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Legal Agent Benchmark mean criterion-pass rate — Anthropic harness

Mean fraction of expert-written rubric criteria passed across legal-agent tasks.

1 models

Higher is better.

  1. 1Claude Opus 5Anthropic93.74
Higher is better. Bar colour: blue proprietary, orange open weights, green other.

About this benchmark

Metric
Mean criterion-pass rate
Tasks
1,235 legal-agent tasks
Authors
Harvey AI and 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.