Z.ai GLM-Legal Beats Claude Fable 5 and Kimi K3 on Harvey LAB

What happened

Z.ai GLM-Legal Beats Claude Fable 5 and Kimi K3 on Harvey LAB, according to MarkTechPost. Z.ai’s GLM-Legal is a legal AI model built on GLM-5.3-Flash. It scores 19.2% all-pass on Harvey’s Legal Agent Benchmark, nearly 3x its base, at $0.15 per test.

GLM-Legal is a legal AI model from Z.ai, built on GLM-5.3-Flash and trained for agentic (AI that carries out multi-step tasks rather than answering one question) legal work. It targets contract review, evidence analysis and compliance research.

The key result is a 19.2% all-pass rate on Harvey’s Legal Agent Benchmark (LAB) . That is nearly 3x its base model’s 6.7%.