o1-pro
No estimate
No hardware requirements for this model
The weights for this model have not been published, so it cannot be downloaded or run on your own hardware at any size. It is reachable only through its provider, and no graphics card changes that.
On record
Full specification
Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.
Origin
Who built this model, where, and when it was published.
- Organisation
- OpenAI
- Organisation type
- Industry
- Country
- United States of America
- Published
- 19 March 2025
What it does
The problem areas the model was built for. A model can carry several of each.
- Domain
- Language, Mathematics, Multimodal
- Task
- Code generation, Language modeling/generation, Quantitative reasoning, Chat, Question answering, Translation, Mathematical reasoning
Size
How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.
- Training data
- tokens
Availability
Whether you can obtain the model and run it on your own hardware, which is what decides if any of the graphics-card figures on this page apply.
- Weights
- Closed — provider access only
- Model access
- API access
- Training code
- Unreleased
How it is classified
Labels the source dataset applies when tracking notable models, and how confident it is in the entry.
- Likely above 10²³ FLOP
- Yes
- Why it is tracked
- SOTA improvement,Significant use
- Record confidence
- Likely
SOTA in GPQA among others: https://openai.com/index/learning-to-reason-with-llms/ "we recruited experts with PhDs to answer GPQA-diamond questions. We found that o1 surpassed the performance of those human experts, becoming the first model to do so on this benchmark." "With its vision perception capabilities enabled, o1 scored 78.2% on MMMU, making it the first model to be competitive with human experts."
Sources
Where this record came from and when it was last checked.
- Reference
- Introducing ChatGPT Pro: Broadening usage of frontier AI.
- Last updated
- 24 April 2026
What the numbers mean
About this model
o1-pro was published by OpenAI, in the country recorded as United States of America, during March 2025. The category the publisher falls under is industry.
It works in the domain of Language, Mathematics, Multimodal, and is recorded as performing the task of code generation, Language modeling/generation, Quantitative reasoning, Chat, Question answering, Translation, Mathematical reasoning.
This is a closed model: the trained values stayed with whoever produced them, and there is no local version to run.
What went into building it
It is tracked in the underlying dataset for one reason in particular: sOTA improvement,Significant use.
Answers
o1-pro — common questions
o1-pro— how many parameters does it have?
No parameter count has been published for it, which is why no memory or speed figure appears on this page.
o1-pro— who created it?
It was published by OpenAI, based in United States of America, an organisation categorised as industry.
o1-pro— when was it released?
It was published in March 2025.
o1-pro— what is it used for?
It works in the domain of Language, Mathematics, Multimodal, and is recorded as handling the task of code generation, Language modeling/generation, Quantitative reasoning, Chat, Question answering, Translation, Mathematical reasoning. Models frequently carry more than one of each, and the tags describe purpose rather than capability limits.
o1-pro— what GPU do I need to run it?
None. This is a closed model — its weights were never published, so it cannot be downloaded or run on your own hardware at any price. It is reachable only through its provider.
o1-pro— is it open source?
No. Its weights have not been published, so it exists only as a service controlled by its owner.
The other direction
Looking at it from the other side?
This page starts from the model. If you already own a card and want to know everything it will run, start from the hardware instead.