
GLM open-weight model family (GLM-5 / 5.1 / 5.2 / 5.3)
Zhipu's frontier line, designed for Agentic, Reasoning, Coding workloads. GLM-5.3 (August 14, 2026) is an extended post-training pass on the same ~743B-parameter mixture-of-experts base as GLM-5.2; Hugging Face lists the published weights at 753B total parameters under a custom GLM-5.3 License. GLM-5.3-Flash (August 26) is a 320B/18B natively multimodal MIT-licensed sibling served on domestic-chip clusters.






