CLAIM-2026-08-18-01

Z.ai released GLM-5.3 on 14 August 2026, served via the Z.ai API, Coding Plan and ZCode, with model weights withheld at launch.

Why it matters

Fixes the event date and the access surface. The model is reachable from the EU today through an API, with weights still withheld — which is the configuration the post reasons about.

Sources

• z.ai/blog/glm-5.3
• MarkTechPost
• Axios
• Unite.AI