Z.ai Ships GLM-5.3 Without Retraining the Base Model: Better at Complex Coding and Long-Horizon Tasks

MarkTechPost · 2 months ago · 36 ● 3 sources

Z.ai released GLM-5.3 using the same 743B base model as GLM-5.2, improving it through scaled post-training rather than retraining the base. Terminal-Bench 3.0 increased from 4.6 to 28.3 and CyberGym rose from 77.2% to 84.5%. GLM-5.3 is partially deployable via the Z.ai API and coding products now, while weights are planned to be published about two weeks after launch after safety evaluation and hardening.