LaunchAI ModelsAugust 14, 2026

China's Z.AI ships GLM-5.3, claims top open-weight coding model

Z.ai released GLM-5.3, a 743-billion-parameter open-weights coding model, live via GLM Coding Plan and ZCode. It scores 34.5% on Z.ai Code Bench at Max effort, beating GLM-5.2's 23.4%, but trails closed models like Claude Fable 5 (39.5%).

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