# Harvey — Introducing BigLaw Bench: Arena

- Company: Harvey (harvey.ai)
- Announced: 2025-11-07T14:00:00+00:00
- Category: not stated
- Coverage: not counted
- Announcement: no
- Group: routine
- Source: https://www.harvey.ai/blog/introducing-biglaw-bench-arena
- Record: https://forck.live/items/17652-introducing-biglaw-bench-arena
- Subject: Harvey

Harvey introduced BigLaw Bench: Arena, an internal system for head-to-head evaluation of AI systems on legal tasks through pairwise comparison by lawyers. The system produces Elo scores and qualitative feedback to determine which models experts prefer. Harvey also published recent results comparing its Harvey Assistant against prior implementations and leading foundation models.

## Evidence

Verbatim from https://www.harvey.ai/blog/introducing-biglaw-bench-arena:

> Today, we’re introducing BigLaw Bench: Arena (BLB: Arena), which is our internal system for determining which models and systems experts actually prefer through scaled, pairwise comparison.

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