o1-preview
OpenAI's advanced reasoning model trained with reinforcement learning
o1-preview
OpenAI • September 2024
Training Data
Up to October 2023
o1-preview
September 2024
Parameters
~175 billion
Training Method
Reinforcement Learning
Context Window
128,000 tokens
Knowledge Cutoff
October 2023
Key Features
Chain of Thought • Advanced Reasoning • Problem Solving
Capabilities
Reasoning: Outstanding
Math: Excellent
Science: Excellent
What's New in This Version
Significant improvements in complex reasoning and problem-solving
OpenAI's advanced reasoning model trained with reinforcement learning
What's New in This Version
Significant improvements in complex reasoning and problem-solving
Technical Specifications
Key Features
Capabilities
Other OpenAI Models
Explore more models from OpenAI
GPT-5.6 Sol
OpenAI's flagship GPT-5.6 model — its most capable system yet for complex coding, cybersecurity, and scientific reasoning, with new max reasoning effort and ultra subagent mode
GPT-5.6 Terra
The balanced mid-tier of the GPT-5.6 family — matches GPT-5.5 quality on high-volume business tasks at roughly half the price
GPT-5.6 Luna
The fastest, most cost-efficient GPT-5.6 model — strong everyday capability at OpenAI's lowest price for summarization, drafting, and routine automation
