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GLM-5.3

A 743B-parameter flagship model released by Zhipu AI, enhanced through post-training reinforcement learning scaling with IndexShare, SAO, and Slime for complex terminal execution, coding, and cybersecurity evaluation.

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01Zhipu AI Releases GLM-5.3 with Scaled Post-Training RL and Emergent Cyber Capabilities, Open-Sourcing Weights in Two WeeksZhipu AI has officially released GLM-5.3, a flagship model enhanced through scaled post-training on a 743B base. Powered by IndexShare, SAO reinforcement learning, and the Slime async training framework, the model ranks first across CyberGym (84.5%), AutomationBench (48.2%), and GDPval-AA v2 (1769) while reaching 28.3 on Terminal Bench 3.0, accompanied by a two-week open-source roadmap.8/15/2026