O3-mini is fine-tuned for STEM problems, specifically for programming, math, and science. OpenAI claims the model is largely on par with the o1 family, o1 and o1-mini, in terms of capabilities, but runs faster and costs less.
O3-mini will be available to all users via ChatGPT starting Friday, but users who pay for OpenAI’s ChatGPT Plus and Team plans will get a higher rate limit of 150 queries per day. ChatGPT Pro subscribers will get unlimited access, and o3-mini will come to ChatGPT Enterprise and ChatGPT Edu customers in a week. (No word on ChatGPT Gov yet).