OpenAI on Wednesday said it has rolled back last week's GPT‑4o update in its AI chatbot ChatGPT. "The update we removed was overly flattering or agreeable—often described as sycophantic," OpenAI said in a statement. "In this update, we focussed too much on short-term feedback, and did not fully account for how users' interactions with ChatGPT evolve over time," OpenAI added.