OpenAI CEO Sam Altman announced on Thursday that the new o3-mini reasoning model will power ChatGPT chat sessions for free tier users.

ChatGPT, OpenAI's chatbot, suffered an outage earlier today—and that sent social media into a whirlwind of worried action.

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With speculation online about OpenAI having reached the AGI stage of ChatGPT development, Sam Altman says that's not what's ...