OpenAI's CEO warns of recklessness in AI compute buildout.
Altman says many providers lack revenue or customers.
He calls the situation "unsustainable silliness."
What happened
OpenAI CEO Sam Altman called the AI infrastructure boom "unsustainable silliness," citing neocloud providers announcing massive capacity without the revenue or customers to justify it.
Why it matters
OpenAI's own expansion is profitable and backed by real demand, Altman said, but rivals' "cost is no object" mindset could turn expensive buildouts into bad bets if OpenAI cuts costs and boosts efficiency fast enough.
What to watch
Altman didn't categorically rule out selling compute to third parties, and his tone is more cautious than when Anthropic CEO Dario Amodei accused him of "YOLO"-ing money into the buildout.
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Altman's comments mark a notable shift in tone from his earlier stance, when Anthropic CEO Dario Amodei accused him of "YOLO"-ing money into the compute buildout. Now, Altman is cautioning against a "cost is no object" mindset among competitors, even as his own company's expansion remains profitable and demand-driven. He also suggested that if OpenAI improves efficiency quickly, today's expensive buildouts could become poor investments, potentially straining companies that overcommitted. While he considers the risk of a downturn manageable for OpenAI, his cautious language hints at broader uncertainty in the infrastructure race.
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