# GLM 5p3 Fast API Pricing

As of October 10, 2026, GLM 5p3 Fast costs $2.10 per 1M input tokens and $6.60 per 1M output tokens from Fireworks AI, the lowest of 2 providers, with cache reads at $0.39 per 1M tokens. It has a 1,048,576-token context window and returns up to 262,144 tokens per response.

- Page: https://models.litellm.ai/models/glm-5p3-fast
- Lab: Z.ai
- LiteLLM model name: `fireworks_ai/glm-5p3-fast`
- Context window: 1,048,576 tokens
- Max output: 262,144 tokens
- Added to LiteLLM: September 14, 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 |
|---|---|---|---|---|---|---|---|
| Fireworks AI | `fireworks_ai/glm-5p3-fast` | $2.10 | $6.60 | $0.39 | – | – | 1M |
| Baseten | `baseten/zai-org/GLM-5.3-Fast` | $2.10 | $6.60 | $0.21 | – | – | 1M |
| Fireworks AI | `fireworks_ai/accounts/fireworks/routers/glm-5p3-fast` | $2.10 | $6.60 | $0.39 | – | – | 1M |

## Cost examples

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

- Fireworks AI: $7.50
- Baseten: $7.50

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

- Fireworks AI: $22.32
- Baseten: $22.32

## Features

Supported: Function calling, Structured output, Reasoning, Prompt caching.
Not supported: Image input.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="fireworks_ai/glm-5p3-fast",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does GLM 5p3 Fast cost?

GLM 5p3 Fast costs $2.10 per 1M input tokens and $6.60 per 1M output tokens from Fireworks AI, the lowest of 2 providers, with cache reads at $0.39 per 1M tokens.

### What is the context window of GLM 5p3 Fast?

GLM 5p3 Fast has a 1,048,576-token context window and returns up to 262,144 tokens per response.

### Which providers offer GLM 5p3 Fast?

GLM 5p3 Fast is available from 2 providers through LiteLLM: Fireworks AI and Baseten.

### How do I call GLM 5p3 Fast with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="fireworks_ai/glm-5p3-fast", 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 5p3 Fast support?

GLM 5p3 Fast supports function calling, structured output, reasoning and prompt caching. It does not support image input.

### When did LiteLLM add GLM 5p3 Fast?

GLM 5p3 Fast was added to LiteLLM's model price file on September 14, 2026.

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