GLM-5.3 Tops Benchmarks via Post-Training, Held Back Over Cyber Risk

Z.ai's GLM-5.3 matches the top of open-source leaderboards and scores 84.5% on CyberGym, with gains coming entirely from post-training on GLM-5.2; its release is delayed due to overly strong cybersecurity capabilities.

2026-08-31 ~ 2026-09-01 · 2 related posts

• GLM-5.3 ties top open models via post-training; release paused for safety — DeepLearningAI · 2026-08-31
• GLM-5.3 tops vulnerability benchmark via fine-tuning, weights withheld over safety — DeepLearningAI · 2026-09-01