In a court filing, Mr. Musk said he and other investors would pull their $97.4 billion bid if OpenAI withdrew its plan to change its structure.

The company answered the billionaire’s offer in a legal filing, accusing him of hypocrisy.

The billionaire is leading a group of investors in the unsolicited offer, which complicates the start-up’s plan to raise more money.

The tech mogul is unlikely to win. But his goal may be more about making life difficult for the A.I. start-up and its leader, Sam Altman.

After helping President Trump get elected, Elon Musk was poised to dominate the country’s A.I. policies. Then Mr. Altman sneaked into the White House.

A new investment from the Japanese conglomerate would be separate from the $100 billion tied to a project announced at the White House last week.

Tech tycoons joining political big shots equals an ego explosion.

The second Trump White House is starting out with a remarkable degree of conflict among different individuals, constituencies and worldviews.

The party symbolized the euphoria of the tech industry on the cusp of the Trump presidency. The guest list included Mark Zuckerberg, Sam Altman, Miriam Adelson and the vice president-elect, JD Vance.

The maker of ChatGPT hopes to spur investment from the Middle East and avoid strict regulations on the development of new technologies.

OpenAI’s chief executive and founder denies the allegations, which are similar to claims his sister has long made online.

OpenAI said it would be restructured as a public benefit corporation, and that the nonprofit that controls the organization would receive shares in the new company.