GLM-5.3: 750B-parameter model nears frontier, showing how Chinese labs keep pace

Miles_Brundage · x · 2026-08-16

Z.ai released GLM-5.3, currently in coding plan, coming to API and open weights on Hugging Face in two weeks. It surpasses Kimi K3 on many benchmarks and some Claude Fable 5 or GPT-5.6-Sol, with only 750B parameters, a third of Kimi K3. Z.ai says it's all post-training scaling, sparking discussion on how Chinese labs keep up.

Related event: Zhipu Releases GLM-5.3: Major Coding and Security Gains via Post-Training(51 posts)→

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