OpenAI: o1-pro

OpenAIID: openai/o1-pro

The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and provide consistently better answers.

Pricing per 1M Tokens

Input (Prompt)$150
Output (Completion)$600
Cache ReadFree
Cache WriteFree
ImageN/A

Specifications

Context Length200K
Max Output Tokens100K
Input ModalitiesText + Image + File
Output ModalitiesText
TokenizerGPT
Instruct TypeN/A
Top Provider Context200K
Top Provider Max Output100K
ModeratedYes

Compare this model

See how OpenAI: o1-pro stacks up against other models.

vs OpenAI: GPT-5.4 Nanovs OpenAI: GPT-5.4 Minivs OpenAI: GPT-5.4 Provs OpenAI: GPT-5.4vs OpenAI: GPT-5.3 Chat

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Last updated: March 23, 2026

First tracked: March 23, 2026