# o1 Pro API Pricing

As of October 10, 2026, o1 Pro costs $150.00 per 1M input tokens and $600.00 per 1M output tokens on OpenAI. It has a 200,000-token context window and returns up to 100,000 tokens per response.

- Page: https://models.litellm.ai/models/o1-pro
- Lab: OpenAI
- LiteLLM model name: `o1-pro`
- Context window: 200,000 tokens
- Max output: 100,000 tokens
- Added to LiteLLM: March 2025
- Deprecation date: October 23, 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 |
|---|---|---|---|---|---|---|---|
| OpenAI | `o1-pro` | $150.00 | $600.00 | – | – | – | 200K |
| OpenAI (snapshot 2025-03-19) | `o1-pro-2025-03-19` | $150.00 | $600.00 | – | – | – | 200K |

## Cost examples

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

- OpenAI: $600.00
- OpenAI batch: $300.00

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

- OpenAI: $1,620.00

## Features

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

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="o1-pro",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does o1 Pro cost?

o1 Pro costs $150.00 per 1M input tokens and $600.00 per 1M output tokens on OpenAI. Batch requests cost $75.00 per 1M input tokens and $300.00 per 1M output tokens.

### What is the context window of o1 Pro?

o1 Pro has a 200,000-token context window and returns up to 100,000 tokens per response.

### Which providers offer o1 Pro?

o1 Pro is available from OpenAI through LiteLLM, using the model name o1-pro.

### How do I call o1 Pro with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="o1-pro", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/responses from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### What features does o1 Pro support?

o1 Pro supports function calling, parallel tool calls, structured output, image input, PDF input, reasoning and prompt caching.

### When did LiteLLM add o1 Pro?

o1 Pro was added to LiteLLM's model price file in March 2025.

### Is o1 Pro being deprecated?

OpenAI lists a deprecation date of October 23, 2026 for o1-pro.

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