OpenAI gets caught vibe graphing

During its big GPT-5 livestream on Thursday, OpenAI showed off a few charts that made the model seem quite impressive — but if you look closely, some graphs were a little bit off.

In one, ironically showing how well GPT-5 does in “deception evals across models,” the scale is all over the place. For “coding deception,” for example, GPT-5 apparently gets a 50.0 percent deception rate, but that’s compared to OpenAI’s smaller 47.4 percent o3 score which somehow has a larger bar.

Or this one, where one of GPT-5’s scores is lower than o3’s but is shown with a bigger bar. In this same chart, o3 and GPT-4o’s scores are different but shown with equally-sized bars. That chart was bad enough that CEO Sam Altman commented on it, calling it a “mega chart screwup.” An OpenAI marketing staffer also apologized for the “unintentional chart crime.”

OpenAI didn’t immediately respond to a request for comment. And while it’s unclear if OpenAI used GPT-5 to actually make the charts, it’s still not a great look for the company on its big launch day — especially when it is touting the “significant advances in reducing hallucinations” with its new model.