OpenAI is bringing back GPT-4o in ChatGPT just one day after replacing it with GPT-5. In a post on X, OpenAI CEO Sam Altman ...

When OpenAI released its new flagship GPT-5, it said it would discontinue its older 4o model, popular for its warm writing ...

ADDRESSING USER FEEDBACK We’re in the middle of one of the biggest ChatGPT updates we’ve ever shipped — GPT-5 is rolling out ...