News Brief2 min read
Z.ai Releases GLM-5.3 MoE Model with Scaled Post-Training and Cybersecurity Upgrades
Z.ai released GLM-5.3 on August 14, 2026 — a 743-billion parameter Mixture-of-Experts model. While sharing the same base architecture as GLM-5.2, scaled post-training pushes its Terminal-Bench 3.0 performance from 4.6% to 28.3%.