Z.ai releases open-weight GLM-5.3, beating GPT-5.
Z.ai released GLM-5.3 as open weights on Aug 28, 2026, built on the GLM-5.2 base with scaled post-training. It scores 84.5% on CyberGym, 60 on Artificial Analysis Intelligence Index, and beats GPT-5.6 and Claude Fable 5 on agentic benchmarks.
How this story unfolded
3 weeks · 15 reports · 31 community posts · 46 of 49 shown
- Aug 14
Z.ai Ships GLM-5.3 Without Retraining the Base Model: Better at Complex Coding and Long-Horizon Tasksmarktechpost.com
GLM-5.3 didn’t change the base model — where did its coding gains come from?thenewstack.io
China's Z.AI Ships GLM-5.3, Calling It the Top Open-Weight Coding Modeldecrypt.co
GLM-5.3: How Chinese labs keep stride with the frontierinterconnects.ai
GLM-5.3 is here with advanced cyber capabilities — and reportedly already found a 'serious vulnerability' in Cursorventurebeat.com
- Aug 15
- Aug 16
- Aug 17
- Aug 18
- Aug 19
GLM-5.3 achieves 60 on the Artificial Analysis Intelligence Index, on par with Kimi K3 and up 7 points from GLM-5.2. Once the weights are released it will be tied as the leading open weights model
- Aug 28
- Aug 29
- Aug 31
- Sep 1
- Sep 2
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