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Z.ai · Language model

GLM 4.5 Air

z-ai/glm-4.5-air
  • Language
Released Jul 25, 2025

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...

Specifications

Context window
131,072 tokens
Max output
98,304 tokens
Input
text
Output
text
Reasoning
supported
Tokenizer
Other
Knowledge cutoff
2024-12-31

Supported parameters

Accepted by the model and forwarded as-is by the gateway.

  • frequency_penalty
  • max_tokens
  • presence_penalty
  • reasoning
  • repetition_penalty
  • seed
  • stop
  • temperature
  • tool_choice
  • tools
  • top_k
  • top_p

Use it

POST /api/v1/chat/completions · MCP chat · full reference

curl https://omnirail.org/api/v1/chat/completions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"z-ai/glm-4.5-air","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'