Agentic benchmark
LAB criterion-pass (Anthropic harness) leaderboard
Legal Agent Benchmark mean criterion-pass rate — Anthropic harness. Every model the catalog carries a published LAB criterion-pass (Anthropic harness) value for, ranked by that value.
Mean fraction of expert-written rubric criteria passed across legal-agent tasks.
LAB criterion-pass (Anthropic harness) ranking
1 model with a published LAB criterion-pass (Anthropic harness) value, ordered by that value, highest first. Models the source has not scored on this benchmark are not listed — they are unmeasured, not last.
| Rank | Model | Provider | Mean criterion-pass rate |
|---|---|---|---|
| 1 |  Claude Opus 5 | Anthropic | 93.74 |
Evidence key: Observed
Rows are ordered by the value Claude Opus 5 System Card published, highest first. The source does not state whether a higher value is the better result, so this page does not either: for a benchmark that measures a rate of failure, read the table from the bottom.