According to BenchLM.ai, Kimi K3 leads the AA Harvey LAB benchmark with a score of 94.6%, followed by Claude Fable 5 (93.6%) and Claude Opus 5 (93.5%). The top models are clustered within 1.1 points, suggesting this benchmark is nearing saturation for frontier models.

12 models have been evaluated on AA Harvey LAB. The benchmark falls in the Agentic category. BenchAlign v5.7 gives AA Harvey LAB 1% of the Agentic reference weight, so it moves the Agentic leaderboard and the overall ranking. Reference weights are relative weights in the calibrated model, not fixed shares of a score.

About AA Harvey LAB

Year

2026

Tasks

Legal agent tasks

Format

Task success rate

Difficulty

Professional legal work

Stored as its own agentic row.

Artificial Analysis Harvey LAB-AA Benchmark Leaderboard

Freshness and provenance

Version

AA Harvey LAB 2026

Refresh cadence

Quarterly

Staleness state

Current

Question availability

Public benchmark set

Current

BenchLM uses freshness metadata to decide whether a benchmark should still be treated as a strong differentiator, a benchmark to watch, or a display-only reference. For the full scoring policy, see the BenchLM methodology page.

Questions

What does AA Harvey LAB measure?

An independently evaluated legal-agent benchmark from Artificial Analysis.

Which model scores highest on AA Harvey LAB?

Kimi K3 by Moonshot AI currently leads with a score of 94.6% on AA Harvey LAB.

How many models are evaluated on AA Harvey LAB?

12 AI models have been evaluated on AA Harvey LAB on BenchLM.

Compare top models on AA Harvey LAB

Kimi K3 vs Claude Fable 5 Claude Fable 5 vs Claude Opus 5 Claude Opus 5 vs Claude Fable 5.1 Claude Fable 5.1 vs Claude Opus 5.5

Last updated: September 27, 2026 · BenchLM version AA Harvey LAB 2026

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