# GPT OSS 120B Mxfp API Pricing

As of October 10, 2026, GPT OSS 120B Mxfp is free to use on Lemonade. It has a 131,072-token context window and returns up to 32,768 tokens per response.

- Page: https://models.litellm.ai/models/gpt-oss-120b-mxfp
- Lab: OpenAI
- LiteLLM model name: `lemonade/gpt-oss-120b-mxfp-GGUF`
- Context window: 131,072 tokens
- Max output: 32,768 tokens
- Added to LiteLLM: October 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 |
|---|---|---|---|---|---|---|---|
| Lemonade (gguf) | `lemonade/gpt-oss-120b-mxfp-GGUF` | $0 | $0 | – | – | – | 128K |

## Cost examples

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

- Lemonade: $0

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

- Lemonade: $0

## Features

Supported: Function calling, Structured output.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="lemonade/gpt-oss-120b-mxfp-GGUF",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does GPT OSS 120B Mxfp cost?

GPT OSS 120B Mxfp is free to use on Lemonade.

### What is the context window of GPT OSS 120B Mxfp?

GPT OSS 120B Mxfp has a 131,072-token context window and returns up to 32,768 tokens per response.

### Which providers offer GPT OSS 120B Mxfp?

GPT OSS 120B Mxfp is available from Lemonade through LiteLLM, using the model name lemonade/gpt-oss-120b-mxfp-GGUF.

### How do I call GPT OSS 120B Mxfp with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="lemonade/gpt-oss-120b-mxfp-GGUF", 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 GPT OSS 120B Mxfp support?

GPT OSS 120B Mxfp supports function calling and structured output.

### When did LiteLLM add GPT OSS 120B Mxfp?

GPT OSS 120B Mxfp was added to LiteLLM's model price file in October 2025.

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