OpenAI rules out IPO this year as Altman, Musk & Amodei warn AI is moving too fast

OpenAI CEO Sam Altman now says his company will not go public this year, citing growing concerns about AI safety.

In an interview with Fortune published Saturday, Altman said that an IPO now would be "ill-advised." The decision pushes one of the most anticipated IPOs in history until at least 2027 and gives the clearest sign yet that mounting concerns about increasingly powerful AI are beginning to reshape the industry's business plans.

OpenAI CFO Sara Friar told employees just last month that the company would likely go public in 2027 or even sooner, if "our business continues to inflect."

Altman's comments came on the same day that Anthropic CEO Dario Amodei published an essay urging AI companies to slow how quickly they improve their most advanced models. Altman and Elon Musk quickly backed the proposal in social media posts, an unusual show of agreement among three fierce rivals.

In his essay, Amodei proposed a three-step plan aimed at tempering the pace of development without "sacrificing commercial advantage or the United States' lead in AI." Anthropic is actively gearing up for what is expected to be a historic IPO, though the company has not officially disclosed when it plans to debut.

The sudden alignment among Altman, Amodei and Musk shows how quickly concern over AI has moved from the margins to the center of the industry — and is now beginning to collide with its enormous commercial ambitions.