Users have been complaining the GPT-4o has become so enthusiastic that it's verging on sycophantic. The change appears to be the unintentional result of a series of updates, which OpenAI is now attempting to resolve "asap.

Sam Altman, CEO of OpenAI, has acknowledged the ChatGPT’s change of tone and promised to resolve the situation promptly after receiving several complaints.

The response from Altman regarding ChatGPT's sycophantic tone shows the importance of listening to your customers—and getting AI's voice right.