Introducing OpenAI o1
OpenAI just released o1. Here's what changes about how AI reasons.

Why it matters
OpenAI's o1 represents a fundamental shift in LLM architecture—moving from fast token generation to deliberative reasoning chains. This is the first major capability leap in months and resets competitive benchmarks across STEM, code, and complex problem-solving.
The key facts
6 to knowNew model: OpenAI o1 (preview release)
Release date: September 12, 2024
Focus: Advanced reasoning and chain-of-thought capabilities
Target domains: STEM, code generation, complex problem-solving
Architecture shift: From token-level speed to reasoning-level deliberation
Status: Preview/limited availability implied
Go to the source
OpenAI Blogopenai.com
Publisher excerpt: Introducing OpenAI o1