Z.ai
GLM-5.3
z-ai/glm-5.3
Reasoning model for complex engineering and long agent tasks. Text only.
TextText → TextReady on endue
- Coding
- Agentic work
- Long documents
Overview
Good for
Written by endue
- Coding
- Agentic work
- Long documents
Not ideal for
From the model’s specs
- Text input only. Images and files you attach are skipped.
Capabilities
| Tool use | Supported |
|---|---|
| Structured output | Supported |
| JSON mode | Supported |
| Reasoning | Supported |
| Vision | Not supported |
| Audio input | Not supported |
| Video input | Not supported |
| File input | Not supported |
| Long context | Supported |
Specifications
- Model ID
z-ai/glm-5.3- Family
- GLM-5
- Context window
- 1.3M tokens
- Input
- Text
- Output
- Text
- Released
- 2026-08-18