LLM Reference
OpenAI API

Using o1 (12-17) on OpenAI API

Implementation guide · o1 · OpenAI

Serverless

OpenAI API exposes o1 (12-17) through model ID o1-2024-12-17. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-05-10. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenAI API and generate an API key.
  2. 2
    Use the OpenAI API SDK or REST API to call o1-2024-12-17 — see the documentation for request format.
  3. 3
    You'll be billed $15.00/1M input, $60.00/1M output tokens. See full pricing.

Code Examples

Install
pip install openai
API key
OPENAI_API_KEY
Model ID
o1-2024-12-17

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="o1-2024-12-17",
    messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)

Pricing on OpenAI API

TypePrice (per 1M)
Input tokens$15.00
Output tokens$60.00

Capabilities

ReasoningCode Execution

About o1 (12-17)

Latest OpenAI o1 model emphasizing advanced reasoning and complex problem-solving.

Model Specs

Released2024-12-17
Context128k
ArchitectureDecoder Only

Provider

OpenAI API
OpenAI API

OpenAI

San Francisco, California, United States