# GLM 4.5 Air API Pricing

As of October 10, 2026, GLM 4.5 Air costs $0.20 per 1M input tokens and $1.10 per 1M output tokens on Z.ai. Across 6 providers on LiteLLM, the input price ranges from $0.125 to $0.22. It has a 128,000-token context window and returns up to 32,000 tokens per response.

- Page: https://models.litellm.ai/models/glm-4.5-air
- Lab: Z.ai
- LiteLLM model name: `zai/glm-4.5-air`
- Context window: 128,000 tokens
- Max output: 32,000 tokens
- Added to LiteLLM: July 2025
- Prices updated: October 10, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| Z.ai | `zai/glm-4.5-air` | $0.20 | $1.10 | – | – | – | 128K |
| Fireworks AI | `fireworks_ai/accounts/fireworks/models/glm-4p5-air` | $0.22 | $0.88 | – | – | – | 128K |
| Novita AI | `novita/zai-org/glm-4.5-air` | $0.13 | $0.85 | $0.025 | – | – | 128K |
| Pinstripes | `pinstripes/ps/glm-4.5-air` | $0.125 | $0.45 | – | – | – | 128K |
| Vercel AI Gateway | `vercel_ai_gateway/zai/glm-4.5-air` | $0.20 | $1.10 | – | – | – | 128K |
| Together AI (fp8) | `together_ai/zai-org/GLM-4.5-Air-FP8` | $0.20 | $1.10 | – | – | – | 128K |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- Z.ai: $0.95
- Pinstripes: $0.475
- Novita AI: $0.685
- Vercel AI Gateway: $0.95

100 long-document requests with 100,000 input and 2,000 output tokens each:

- Z.ai: $2.22
- Pinstripes: $1.34
- Novita AI: $1.47
- Vercel AI Gateway: $2.22

## Features

Supported: Function calling, Parallel tool calls, Structured output, Reasoning, Prompt caching.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="zai/glm-4.5-air",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does GLM 4.5 Air cost?

GLM 4.5 Air costs $0.20 per 1M input tokens and $1.10 per 1M output tokens on Z.ai. Across 6 providers on LiteLLM, the input price ranges from $0.125 to $0.22.

### What is the context window of GLM 4.5 Air?

GLM 4.5 Air has a 128,000-token context window and returns up to 32,000 tokens per response.

### Which providers offer GLM 4.5 Air?

GLM 4.5 Air is available from 6 providers through LiteLLM: Z.ai, Fireworks AI, Novita AI, Pinstripes, Vercel AI Gateway and Together AI. The lowest price is on Pinstripes.

### How do I call GLM 4.5 Air with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="zai/glm-4.5-air", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### What features does GLM 4.5 Air support?

GLM 4.5 Air supports function calling, parallel tool calls, structured output, reasoning and prompt caching.

### When did LiteLLM add GLM 4.5 Air?

GLM 4.5 Air was added to LiteLLM's model price file in July 2025.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json