# GLM 5.2 Fast Preview API Pricing

As of October 10, 2026, GLM 5.2 Fast Preview costs $2.254 per 1M input tokens and $7.889 per 1M output tokens on AIHubMix, with cache reads at $0.5635 per 1M tokens. It has a 1,000,000-token context window and returns up to 131,072 tokens per response.

- Page: https://models.litellm.ai/models/glm-5.2-fast-preview
- Lab: Z.ai
- LiteLLM model name: `aihubmix/glm-5.2-fast-preview`
- Context window: 1,000,000 tokens
- Max output: 131,072 tokens
- Added to LiteLLM: September 16, 2026
- 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 |
|---|---|---|---|---|---|---|---|
| AIHubMix | `aihubmix/glm-5.2-fast-preview` | $2.254 | $7.889 | $0.5635 | – | – | 1M |

## Cost examples

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

- AIHubMix: $8.453

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

- AIHubMix: $24.12

## Features

Supported: Function calling, Structured output, Reasoning, Prompt caching.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="aihubmix/glm-5.2-fast-preview",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does GLM 5.2 Fast Preview cost?

GLM 5.2 Fast Preview costs $2.254 per 1M input tokens and $7.889 per 1M output tokens on AIHubMix, with cache reads at $0.5635 per 1M tokens.

### What is the context window of GLM 5.2 Fast Preview?

GLM 5.2 Fast Preview has a 1,000,000-token context window and returns up to 131,072 tokens per response.

### Which providers offer GLM 5.2 Fast Preview?

GLM 5.2 Fast Preview is available from AIHubMix through LiteLLM, using the model name aihubmix/glm-5.2-fast-preview.

### How do I call GLM 5.2 Fast Preview with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="aihubmix/glm-5.2-fast-preview", 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 5.2 Fast Preview support?

GLM 5.2 Fast Preview supports function calling, structured output, reasoning and prompt caching.

### When did LiteLLM add GLM 5.2 Fast Preview?

GLM 5.2 Fast Preview was added to LiteLLM's model price file on September 16, 2026.

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