During a Reddit “ Ask Me Anything ” session, OpenAI CEO Sam Altman and members of the GPT-5 team answered questions about the company’s new AI model, and faced plenty of criticism. Many users wanted the older GPT-4o model back, saying GPT-5 didn’t work as well for them.

A quick glimpse of the ChatGPT subreddit (which is not affiliated with OpenAI) shows scathing reviews of GPT-5. Since the model began rolling out, the subreddit has filled with posts calling GPT-5 a "disaster," "horrible," and the "biggest piece of garbage even as a paid user."