Using o4 Mini Deep Research on OpenAI API

Implementation guide · o4-mini · OpenAI

Serverless

OpenAI API exposes o4 Mini Deep Research through model ID o4-mini-deep-research. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-06-04. Next refresh: weekly.

Quick Start

1
Create an account at OpenAI API and generate an API key.
2
Use the OpenAI API SDK or REST API to call o4-mini-deep-research — see the documentation for request format.
3
You'll be billed $2.00/1M input, $8.00/1M output tokens. See full pricing.

API Portal Documentation Pricing Model Card

Code Examples

Install

pip install openai

API key

OPENAI_API_KEY

Model ID

o4-mini-deep-research

Use the model slug directly, e.g. "gpt-4o" or "gpt-4.1-mini".

import os
from openai import OpenAI

client = OpenAI()  # reads OPENAI_API_KEY from env
response = client.chat.completions.create(
    model="o4-mini-deep-research",
    messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)