OpenAI o1-preview
OpenAI · · Architecture
OpenAI released o1, the first reasoning model, demonstrating that chain-of-thought inference at test time could dramatically boost performance on math, science, and coding benchmarks — scoring 83% on IMO problems versus GPT-4o's 13%.
Why it matters
Inference-time compute became a new scaling axis. Before o1: bigger model = better. After o1: smarter thinking = better. Every frontier lab subsequently developed reasoning models.
This is LLM World's historical reading, not a claim by OpenAI. The facts above and the sources below are what it rests on.
The model record for OpenAI o1-preview →
Sources
Record status: verified · confidence 90/100
OpenAI's own announcement, dated September 12, 2024. openai.com blocks automated fetches.
- openai.com Official announcement archived