OpenAI’s o3‑Pro is a model optimized for enterprise-grade logic, coding accuracy, and document processing. It delivers deterministic outputs, rich chain-of-thought reasoning, and extensive context handling.
Accessible via AI/ML API. Documentation: available 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/o3-pro", "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/o3-pro", "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/o3-pro","messages":[{"role":"user","content":"Hello!"}]}'
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Input | |
| Output | |
| Benchmark | Score | What it measures | Source | Retrieved |
|---|---|---|---|---|
| Intelligence | 21.9 | Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial Analysis | Source | September 12, 2026 |
| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
OpenAI o3-Pro This page | Reasoning + agents | |||
| Reasoning + agents | ||||
| Balanced coding + agents | ||||
| Long-context, multimodal & agentic workflows | ||||
| Reasoning + agents |
OpenAI o3-Pro has a 200,000 tokens context window.
OpenAI o3-Pro takes image, text as input and returns text.
Use openai/o3-pro as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.
OpenAI o3-Pro is priced at input $27.508 / 1M tokens, output $110.032 / 1M tokens.
Yes, OpenAI o3-Pro can stream responses as they are generated.
Yes, OpenAI o3-Pro accepts image input alongside text.
OpenAI o3-Pro was built by OpenAI.
Yes, o3-Pro is designed as a reasoning model with deep deliberation for complex tasks.
