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Legal Reasoning research benchmarks – Page 2 · SOTA2 Research

Legal Reasoning

Benchmarks

Dataset NameSOTA MethodSort

Dataset NameSOTA methodMetricTrendResultsLast Updated

0.482GPT-5 Grader Score

4

Jun 25, 2026

PRBench-Legal Hard 250-prompt

Qwen3.5-4B RL on Agentic Self-Instruct data

31.5GPT-5 Grader Score

4

Jun 25, 2026

PRBench-Legal 500 prompts

Qwen3.5-4B RL on Agentic Self-Instruct data

44.1GPT-5 Grader Score

4

Jun 25, 2026

70.1Top-1 Accuracy

4

May 27, 2026

0.919Hypervolume

4

Mar 12, 2026

Legal domain (val)

3.1Correctness

2

Jun 30, 2026

82.3Accuracy

2

Jun 4, 2026

Page 2 of 2

Popular datasets

LegalBench CaseHOLD Law PRBench LawBench

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