o1-pro
o1-pro is a text generation model from OpenAI that applies extended compute to reasoning tasks, with a 200,000-token context window.
OpenAIExtended reasoning for complex problem solving
o1-pro is a text generation model developed by OpenAI and released in December 2024. It is a variant of the o1 model family designed to apply more compute during inference, allowing it to spend additional time reasoning through problems before producing a response. This approach is intended to improve reliability on tasks that benefit from deliberate, multi-step thinking, such as complex mathematics, scientific analysis, and intricate coding challenges.
The model supports a context window of 200,000 tokens and a maximum response size of 100,000 tokens, making it suitable for tasks involving long documents or detailed outputs. o1-pro is available as a first-party OpenAI model and is accessible through MindStudio without requiring separate API key management. It is best suited for use cases where accuracy and thoroughness on difficult reasoning tasks take priority over response speed.
What o1-pro supports
Extended Reasoning
Applies additional compute at inference time to reason through multi-step problems before responding, improving reliability on complex tasks.
Large Context Window
Supports up to 200,000 tokens of context, enabling analysis of long documents, codebases, or multi-turn conversations in a single request.
Long-Form Output
Generates responses up to 100,000 tokens, suitable for producing detailed reports, extensive code, or thorough written analyses.
Math and Science
Designed to handle rigorous quantitative and scientific problems by reasoning through intermediate steps before arriving at a final answer.
Code Generation
Produces and analyzes code across common programming languages, with extended reasoning applied to debugging and algorithmic problem solving.
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Get Started FreeCommon questions about o1-pro
What is the context window size for o1-pro?
o1-pro supports a context window of 200,000 tokens, allowing it to process long documents or extended conversation histories in a single request.
What is the maximum response length o1-pro can produce?
o1-pro can generate responses up to 100,000 tokens in length, which is suitable for detailed technical documents, long-form code, or comprehensive analyses.
How does o1-pro differ from the standard o1 model?
o1-pro is designed to use more compute during inference than the standard o1 model. This extended reasoning time is intended to improve accuracy and reliability on difficult tasks, though it may result in slower responses.
What is the knowledge cutoff date for o1-pro?
The metadata provided does not specify a knowledge cutoff date for o1-pro. OpenAI's published documentation for the o1 model family should be consulted for the most accurate cutoff information.
What types of tasks is o1-pro best suited for?
o1-pro is best suited for tasks that require careful, multi-step reasoning, such as complex mathematics, scientific problem solving, and challenging coding tasks where accuracy is prioritized over speed.
Is pricing information available for o1-pro on MindStudio?
Published pricing details are not included in the available metadata for o1-pro. You can check MindStudio's pricing page or OpenAI's official API pricing page for current rate information.
What people think about o1-pro
Community discussion around o1-pro has focused largely on its pricing and the timing of its API release, with many users expressing surprise that OpenAI made it available via API in March 2025 alongside GPT-4.5. Some users in the LocalLLaMA subreddit found the decision unusual given the model's high cost relative to other available options.
A recurring concern across threads is whether the pricing of o1-pro and similar flagship models reflects a deliberate strategy rather than standard market positioning. Practical use cases discussed include high-stakes reasoning tasks where accuracy is critical, though many users noted the cost makes it impractical for general or high-volume applications.
OpenAI released GPT-4.5 and O1 Pro via their API and it looks like a weird decision.
With the insane prices of recent flagship models like GPT-4.5 and O1-Pro, is OpenAI trying to limit DeepSeek's use of its API for training?
Parameters & options
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