LAB: US Case Law
Agents draft a litigation brief for the same party and motion as a real filed federal brief, from the case record. Model judges compare briefs pairwise and wins become Elo ratings.
100 environments built from RECAP dockets and CourtListener opinions. Each runs closed-book with cited cases supplied or open-book with a CourtListener MCP. Opus 5.5 rated highest at launch.
- Made by
- Harvey
- Released
- October 2026
- Kind
- Law
- Level
- Expert
- Scored
- Graded by a model
- Answers
- Open-ended
No scores here yet
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We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark.
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