What the evidence says
- Developer
- OpenAI
- Released
- March 19, 2025
- Domains
- Language · Mathematics · Multimodal
- Tasks
- Code generation · Language modeling/generation · Quantitative reasoning · Chat · Question answering · Translation · Mathematical reasoning
- Access
- API access
- Weights
- Closed weights
Platform facts
OpenRouter's platform listing, retrieved July 22, 2026. Routed platform prices, not first-party provider prices.
- Input price
- $150 per 1M tokens
- Output price
- $600 per 1M tokens
- Context length
- 200,000 tokens
- Listed on OpenRouter
- March 19, 2025
Common questions
What is o1-pro?
o1-pro is a OpenAI model released March 19, 2025, according to Epoch AI's reviewed catalog record. The record classifies it under language, mathematics, multimodal.
How does o1-pro rank on LMArena?
No board Model Gauntlet mirrors currently lists this exact model revision under a reviewed identity, so no rating is reported here.
What does o1-pro cost?
OpenRouter lists it at $150 per million input tokens and $600 per million output tokens, retrieved July 22, 2026. Those are the platform's routed prices, not first-party provider prices.