o1
Model ● Covered in 17 stories + Follow
o1 is an OpenAI reasoning model referenced across multiple reports as a baseline in the move toward “reasoning” LLMs trained with reinforcement learning. Recent coverage describes o1’s role in comparisons with newer reasoning models (such as o3 and related systems) and its use in applied settings like financial analysis, where o1 is positioned for more complex reasoning tasks. The same coverage also links o1 to broader research on controlling reasoning effort and improving performance through additional test-time computation.
Updated 15 September 2026
Specifications
No specifications recorded yet.
Latest developments
Q3 2026
- Controlling Reasoning Effort in LLMs
- Reinforcement Learning Heats Up, White House Orders Muscular AI Policy, and more...
Q2 2025
OpenAI releases o3 and o4-mini models with advanced reasoning and integrated tool access Model release
- Why We Think
- Qwen3: Think Deeper, Act Faster
- The State of Reinforcement Learning for LLM Reasoning
- Introducing OpenAI o3 and o4-mini
Q1 2025
- Building an autonomous financial analyst with o1 and o3-mini
- Using OpenAI o1 for financial analysis
- Strengthening America’s AI leadership with the U.S. National Laboratories
- Open-R1: a fully open reproduction of DeepSeek-R1
Q4 2024
- Deliberative alignment: reasoning enables safer language models
- OpenAI o1 and new tools for developers
- OpenAI o1 System Card
Q3 2024
OpenAI releases o1-mini and demonstrates o1 reasoning model applications across genetics, economics, physics, and coding Model release
Relationships
Products & technology
- OpenAI develops this model · 11 sources
- o1-mini derived from this model · 1 source
- Endex deploys this model · 1 source
- Rogo integrated with this model · 1 source
- U.S. National Laboratories deploys this model · 1 source