GLM (Z.ai) free API key: how to get one
The Flash models cost nothing; you can run one request at a time.
Checked October 2026. Limits are set by each company and change often.
Z.ai (GLM)
- Kind
- Always free, no card needed
- Free limits
- The Flash models cost nothing; you can run one request at a time.
- Models
- GLM-4.7 Flash, GLM-4.5 Flash, GLM-4.6V Flash (vision)
How to get it
- Sign up at z.ai.
- Open API Keys and create one.
- Paste it under Z.ai and pick a Flash model.
GLM (Z.ai) models in MultiScreenAI
The free tier covers GLM-4.7 Flash, GLM-4.5 Flash, GLM-4.6V Flash (vision); the others need paid usage on the same key.
Then use it with every other AI at once
Paste the key into MultiScreenAI next to any others you have. One message goes to every model on one screen, and test mode times them and hides the names. A few free keys together go a long way.
Questions
Is the GLM (Z.ai) API key really free?
Yes, there is a free tier, with no card needed. The Flash models cost nothing; you can run one request at a time.
Which models does a free GLM (Z.ai) key reach?
GLM-4.7 Flash, GLM-4.5 Flash, GLM-4.6V Flash (vision)
Can I use the GLM (Z.ai) key with other AIs at the same time?
Yes. Paste it into MultiScreenAI next to your other keys and one message goes to every model at once, answers side by side.
Other free API keys
- Gemini
- Groq
- OpenRouter
- Vercel AI Gateway
- Mistral
- Cerebras
- NVIDIA NIM
- SambaNova
- SiliconFlow
- Cohere
- Hugging Face
- Fireworks
- Qwen
- Cloudflare Workers AI
- Pollinations
- OpenAI (ChatGPT)
- Claude (Anthropic)
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