OpenAI CEO Sam Altman called on world governments Thursday to invest in AI infrastructure, as questions grow about whether the ChatGPT-maker, the world's most valuable private company, can absorb artificial intelligence's massive costs.

"What we do think might make sense is governments building (and owning) their own AI infrastructure, but then the upside of that should flow to the government as well," Altman wrote in a long post on X, clarifying OpenAI's position amid growing scrutiny of the company's ambitious spending plans.

The company behind ChatGPT was facing scrutiny after its chief financial officer Sarah Friar told a business conference Wednesday that the US government could help attract the enormous investment needed for AI computing and infrastructure by guaranteeing loans to

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