Z.ai debuts GLM-5.3, using the same base model as GLM-5.2 with scaled post-training for stronger coding and cyber skills, with weights due in two weeks (Z.ai)
Z.ai says GLM-5.3’s gains come from post-training, not a new base model.
The model uses the same 743B base as GLM-5.2, with Z.ai pointing to scaled post-training for improvements in coding, agentic work, and cyber defense. The company says GLM-5.3 is available now through GLM Coding Plan and ZCode, with API access and open weights to follow in stages after safety evaluations. Techmeme’s note says the weights are due in two weeks. Techmeme's note
The model uses the same 743B base as GLM-5.2, with Z.ai pointing to scaled post-training for improvements in coding, agentic work, and cyber defense. The company says GLM-5.3 is available now through GLM Coding Plan and ZCode, with API access and open weights to follow in stages after safety evaluations. Techmeme’s note says the weights are due in two weeks. Techmeme's note
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