OpenAI o1 is an advanced reasoning model trained to spend more time thinking before responding. It solves complex tasks and problems in math, science, and coding better than previous models. o1 also has a "mini" version that is faster and cheaper.
o1 is available as a preview for Plus, Teams, and API users. Because o1 doesn't let you browse the internet or upload media, GPT-4o is still a better alternative for many tasks.