ZhipuGLM 4Arena #95Jul 25, 2025
Z.ai: GLM 4.5 Air (free)
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
Context Window
131K
tokens
Max Output
96K
tokens
Released
Jul 25, 2025
Arena Rank
#95
of 305 models
Capabilities
👁Vision
🧠Reasoning
🔧Tool Calling
⚡Prompt Caching
🖥Computer Use
🎨Image Generation
Supported Parameters
Include Reasoning
Show reasoning tokens
Max Tokens
Output length limit
Reasoning
Extended thinking
Temperature
Controls randomness
Tool Choice
Control tool usage
Tool Calling
Function calling support
Top P
Nucleus sampling
Pricing Comparison
| Router | Input / 1M | Output / 1M | Cached Input / 1M |
|---|---|---|---|
| OpenRouter | Free | Free | — |
| Vercel AI | $0.20 | $1.10 | — |
| Martian | $0.13 | $0.85 | $0.02 |
Model IDs
OpenRouter
z-ai/glm-4.5-air:freeHugging Facezai-org/GLM-4.5-Air ↗
Tags
reasoningtool-calling