Zhipu launches GLM-5.3 API: AA Intelligence Index 60, tied first among open models
智谱 · wechat · 2026-08-19
Zhipu officially opened the GLM-5.3 API, targeting complex coding, defensive cybersecurity and long-horizon tasks. It scores 60 on the Artificial Analysis Intelligence Index, placing it in the global frontier tier alongside closed-source flagships like Claude Fable 5 and GPT-5.6 Sol, and tied with Kimi K3 as the top open model. Sharing the same base model as GLM-5.2, gains come mainly from post-training (details in the official blog). Pricing stays flat, pushing the intelligence-cost Pareto frontier; it's integrated into ZCode and GLM Coding Plan, with open weights planned for next Friday.
Related event: Zhipu Launches GLM-5.3 API with 50% Coding Boost(4 posts)→
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