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."

After releasing GPT-5 and removing the option for GPT-4o, OpenAI restored access to its older model after a deluge of unhappy user comments.