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![Lauren Yang](https://ph-avatars.imgix.net/5997546/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
A new large language model trained with reinforcement learning to perform complex reasoning. o1 thinks before it answers—it can produce a long internal chain of thought before responding to the user.
![OpenAI o1](https://ph-files.imgix.net/d18d65ba-555a-4342-bd06-79fcc14e35fe.png?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
OpenAI o1
AI that can do general-purpose complex reasoning