OpenAI is shuffling the team that shapes its AI models' behavior, and its leader is moving on to another project within the ...

After a rocky GPT-5 launch, GPT-4o is officially back for paying ChatGPT subscribers. OpenAI CEO Sam Altman also promised users to give them a warning before taking away GPT-4o again.

OpenAI is shuffling its Model Behavior team, a group of about 14 researchers. According to a memo from chief research officer Mark Chen, the squad will be folded into the larger Post Training team, ...

After GPT-5 backlash, OpenAI is bringing back GPT-4o and other legacy models as options for paying ChatGPT users.