o3 Pro
by OpenAI
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and pro
Models
o3 Pro
Added 10 July 2026
Overview
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently...
How to use / API access
Call via OpenRouter with model id `openai/o3-pro`.
- openrouter ·
openai/o3-proDocs
OpenRouter id: openai/o3-pro
Benchmarks
- Intelligence Index (artificial-analysis): 21.9 index
Notes
o3 Pro is listed in the EDNA Models directory from the OpenRouter catalogue.
Get the free Developer’s Field Guide
A 27-page field guide to the AI coding workflow with Claude. Claude Code, MCP servers, the prompt patterns that work, and what to delegate. Free.
Enter your work email. We send it straight over, plus a few short notes worth knowing. Unsubscribe any time.