o3 Pro

OpenAI· released 10 Jun 2025

openai/o3-pro

Input / 1M tokens: $20
Output / 1M tokens: $80

Context window200K tokens

Longest answer: 100K tokens

reads textreads filereads imagetool callingvisionreasoning

About

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...

Details

Lab: OpenAIopenrouter.ai · 3 Oct 2026
Context: 200Kopenrouter.ai · 3 Oct 2026
Input price: $20 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $80 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 100,000 tokensopenrouter.ai · 3 Oct 2026
Inputs: text, file, imageopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/openai/o3-pro· checked 3 Oct 2026