OpenAI CEO Sam Altman just admitted to what the rest of the AI industry won't: that the entire thing could be a big, fat bubble, ready to burst.

Though it's a fiercely debated topic — with many experts saying the writing's on the wall — the OpenAI CEO was unwavering in his conviction.

"When bubbles happen, smart people get overexcited about a kernel of truth," Altman told a small group of reporters on Thursday, as quoted by The Verge. "Are we in a phase where investors as a whole are overexcited about AI? My opinion is yes."

It's a striking admission to make for Altman, whose company is eyeing an astronomical $500 billion valuation. OpenAI has received tens of billions of dollars in investment from Microsoft, Softbank, and Nvidia. And as a flag-bearer of the industry with its mega-popul

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