Z.ai (Zhipu AI)'s open-weight model GLM-5.2 took the top spot in the code category of Design Arena, a crowdsourced benchmark for design and code generation, on June 16, 2026. Its Elo rating reached 1360, surpassing Claude Fable 5 (now unavailable, Elo about 1350), a rise of four ranks and 27 Elo points. In a ranking driven by community votes, an open-weight model has reached one of the highest-tier scores.
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