# Z.ai: GLM 4.5 Air (free)

Provider: z-ai  
Category: llm  
Model ID: `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...

## Specs

- Context length: 131072 tokens
- Max output: 96000 tokens
- Modalities: text
- Released: 2025-07-25

## Pricing

- Input: $0.00 per million tokens
- Output: $0.00 per million tokens

## Providers

- **z-ai** — ctx 131072, input $0.00/M, output $0.00/M

---
Last verified: 2026-04-23T23:46:29.618Z  
Canonical URL: https://switchy.build/models/glm-4-5-air-free