On Tuesday, CEO Sam Altman announced via an X post that OpenAI "started rolling back" the update due to user complaints about its responses. In some examples, reacting to somewhat ridiculous test prompts, ChatGPT encouraged risky medical choices, rude and antisocial behavior, and valued a toaster over animal life.

We are actively testing new fixes to address the issue,” the company said. Those fixes might let users choose from “multiple default personalities.”