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Legal Agent Benchmark all-pass rate — Harvey held-out set

Harvey AI's strict held-out task success rate requiring every rubric criterion to pass.

3 models

Higher is better.

  1. 1Claude Opus 5Anthropic11.7
  2. 2Claude Sonnet 5.5Anthropic10.0
  3. 3Claude Opus 5.5Anthropic8.3
Higher is better. Bar colour: blue proprietary, orange open weights, green other.

About this benchmark

Metric
All-criteria pass rate
Tasks
Harvey-held-out legal-agent tasks
Authors
Harvey AI (2026)

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