Model results · Z.ai

GLM-5.2

Report03
Claude Fable 5 vs Sonnet 5 vs GLM-5.2 benchmark
Accuracy converges across three models while efficiency spans an order of magnitude. Fable 5 at low effort matches Sonnet 5 at high effort for a quarter of the cost.
2026-07-01

How would GLM-5.2 do on your stack?

Public results answer "which model is stronger on this suite." Whether GLM-5.2 belongs in your routing table depends on your languages, your codebases, and your task mix — that gets measured, not guessed. Grading rules are in the methodology.