Sycophancy in GPT-4o: what happened and what we’re doing about it

We have rolled back last week’s GPT‑4o update in ChatGPT so people are now using an earlier version with more balanced behavior. The update we removed was overly flattering or agreeable—often described as sycophantic.

Source: OpenAI ChatGPT — Published April 29, 2025 at 18:00 UTC — Category: Chatbots