GLM 5.3

Z-ai · August 2026

Z.ai's model for complex software engineering and long agent tasks. Text in, text out, with a 1M-token context.

Best for: Coding and agent workflows

Modalities

TextInput and output
ImageNot supported
AudioNot supported
VideoNot supported

Reasoning effort

Default: Max.

Low
High
Max

Ready to try it?

Polymeti is currently invite-only.

Request an invitation

Bring your own API key · Your chats stay in your browser