OpenAI o1 is a state-of-the-art language model designed to excel in complex reasoning tasks, including mathematical problem-solving, programming challenges, and scientific inquiries. The model integrates advanced reasoning capabilities through its innovative architecture, making it suitable for a wide range of applications that require deep understanding and logical deduction.
OpenAI o1 is intended for developers, researchers, and educators who require advanced reasoning capabilities in their applications. It is particularly useful for tasks involving complex problem-solving, coding assistance, and scientific exploration.
The model primarily supports English but can accommodate multiple languages depending on user requirements.
OpenAI o1 employs a transformer-based architecture optimized for reasoning tasks. Key architectural features include:
The model was trained on a vast dataset comprising diverse sources of text, including books, articles, and code repositories.
The model is available on the AI/ML API platform as "OpenAI o1" .
Detailed API Documentation is available here.
OpenAI emphasizes ethical considerations in AI development by promoting transparency regarding the model's capabilities and limitations. The organization encourages responsible usage to prevent misuse or harmful applications of generated content.
OpenAI o1 is available under a commercial license that allows both research and commercial usage rights while ensuring compliance with ethical standards regarding creator rights.
Get OpenAI o1 API here.
Measured on the AI/ML API gateway across live traffic. Figures are medians unless stated. Last updated 2026-10-12.
import requests r = requests.post( "https://api.aimlapi.com/v1/chat/completions", headers={"Authorization": "Bearer " + AIMLAPI_KEY}, json={ "model": "openai/o1-2024-12-17", "messages": [ { "role": "user", "content": "Hello!" } ] }, ) print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", { method: "POST", headers: { Authorization: `Bearer ${process.env.AIMLAPI_KEY}`, "Content-Type": "application/json", }, body: JSON.stringify({ "model": "openai/o1-2024-12-17", "messages": [ { "role": "user", "content": "Hello!" } ] }), }); console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \ -H "Authorization: Bearer $AIMLAPI_KEY" \ -H "Content-Type: application/json" \ -d '{"model":"openai/o1-2024-12-17","messages":[{"role":"user","content":"Hello!"}]}'
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Input | |
| Output | |
| Cached input |
| Benchmark | Score | What it measures | Source | Retrieved |
|---|---|---|---|---|
| Intelligence | 15.2 | Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial Analysis | Source | September 12, 2026 |
| Coding | 39.7 | Composite score across standardised coding evaluations, measured independently by Artificial Analysis | Source | September 12, 2026 |
| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
o1 This page | Reasoning + agents | |||
| Reasoning + agents | ||||
| Balanced coding + agents | ||||
| Long-context, multimodal & agentic workflows | ||||
| Reasoning + agents |
o1 has a 128,000 tokens context window.
o1 takes image, text as input and returns text.
Use openai/o1-2024-12-17 as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.
o1 became available on August 7, 2025.
o1 is priced at input $19.5 / 1M tokens, output $78 / 1M tokens, cached input $9.75 / 1M tokens.
Yes, o1 can stream responses as they are generated.
Yes, o1 accepts image input alongside text.
o1 was built by OpenAI.
o1 is an OpenAI model designed for complex reasoning in science, coding, and mathematics.
