# o4 Mini Deep Research API Pricing

As of October 10, 2026, o4 Mini Deep Research costs $2.00 per 1M input tokens and $8.00 per 1M output tokens on OpenAI, with cache reads at $0.50 per 1M tokens. It has a 200,000-token context window and returns up to 100,000 tokens per response.

- Page: https://models.litellm.ai/models/o4-mini-deep-research
- Lab: OpenAI
- LiteLLM model name: `o4-mini-deep-research`
- Context window: 200,000 tokens
- Max output: 100,000 tokens
- Added to LiteLLM: July 2025
- Deprecation date: July 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 | `o4-mini-deep-research` | $2.00 | $8.00 | $0.50 | – | – | 200K |

## Cost examples

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

- OpenAI: $8.00

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

- OpenAI: $21.60

## Features

Supported: Image input, PDF input, Reasoning, Prompt caching.
Not supported: Function calling, Parallel tool calls, Structured output.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="o4-mini-deep-research",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does o4 Mini Deep Research cost?

o4 Mini Deep Research costs $2.00 per 1M input tokens and $8.00 per 1M output tokens on OpenAI, with cache reads at $0.50 per 1M tokens.

### What is the context window of o4 Mini Deep Research?

o4 Mini Deep Research has a 200,000-token context window and returns up to 100,000 tokens per response.

### Which providers offer o4 Mini Deep Research?

o4 Mini Deep Research is available from OpenAI through LiteLLM, using the model name o4-mini-deep-research.

### How do I call o4 Mini Deep Research with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="o4-mini-deep-research", 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 o4 Mini Deep Research support?

o4 Mini Deep Research supports image input, PDF input, reasoning and prompt caching. It does not support function calling, parallel tool calls and structured output.

### When did LiteLLM add o4 Mini Deep Research?

o4 Mini Deep Research was added to LiteLLM's model price file in July 2025.

### Is o4 Mini Deep Research being deprecated?

OpenAI deprecated o4-mini-deep-research on July 23, 2026.

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