The o3-mini model can be used on the free tier of ChatGPT by selecting the "Reason" feature in ChatGPT, with rate limits similar to GPT-4o. Additionally, OpenAI has increased message limits for Plus ...
OpenAI CEO Sam Altman is a billionaire, thanks to his investments in technology companies like Reddit, Stripe, Airbnb, and more. Here's how Altman made his money.