GLM 4.5 Air

GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications. Like GLM-4.5, it adopts the Mixture-of-Experts (MoE) architecture but with a more compact parameter size. GLM-4.5-Air also supports hybrid inference modes, offering a "thinking mode" for advanced reasoning and tool use, and a "non-thinking mode" for real-time interaction. Users can control the reasoning behaviour with the `reasoning` `enabled` boolean. Learn more in our docs

ChatZhipu131k tokens$0.1417 / $0.9266 · 1M

z-ai/glm-4.5-air

Context
131k tokens
Completion cap
98,304
Tools
Yes
JSON
No
Released
2025-07-25

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai/glm-4.5-air",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is GLM 4.5 Air?
GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications. Like GLM-4.5, it adopts the Mixture-of-Experts (MoE) architecture but with a more compact parameter size. GLM-4.5-Air also supports hybrid inference modes, offering a "thinking mode" for advanced reasoning and tool use, and a "non-thinking mode" for real-time interaction. Users can control the reasoning behaviour with the `reasoning` `enabled` boolean. Learn more in our docs GLM 4.5 Air runs on the Geek Hub API (OpenAI-compatible). Model id: z-ai/glm-4.5-air.
Is GLM 4.5 Air free?
No. Input is $0.1417 per 1M tokens and output is $0.9266 per 1M tokens on Geek Hub (markup included).
What is the context length of GLM 4.5 Air?
GLM 4.5 Air has a 131k tokens context window. It supports up to 98,304 completion tokens.
Does GLM 4.5 Air support tool calling and structured outputs?
GLM 4.5 Air accepts tools and tool_choice for function calling. Structured outputs are not listed for this endpoint.
When was GLM 4.5 Air released?
GLM 4.5 Air was released on 2025-07-25.

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