Z.AI API
z.ai
NewOpen source
First-party developer API for GLM-5.3, GLM-5v Vision, and AutoGLM agent models
- Free tier
- No
- Per month
- Free – Usage
- MCP
- No
Why it's here
OpenAI-compatible GLM API includes free Flash models; several production features vary by model or paid tier.
Free tier
Free GLM Flash text and vision model endpoints.
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LLM APIs
#20 of 20OpenAI-compatible GLM API includes free Flash models; several production features vary by model or paid tier.
| per month | Free modelsFreeGLM-4.7-Flash and selected Flash vision models | Pay as you goUsageGLM-5.1: $1.40 in / $4.40 out per MTok |
|---|---|---|
| Commercial use | ||
| Tool calling | ||
| OpenAI-compatible | ||
| No data training | ||
| Prod rate limits | ||
| JSON schema | ||
| Prompt caching | ||
| Image input | ||
| Context window | 1000000 tokens |