Altman and Musk were OpenAI’s founding co-chairs in 2015, but their relationship has devolved into name-calling and lawsuits.

During Donald Trump's January 20 inauguration, fans couldn't help but notice how Mark Zuckerberg, Jeff Bezos and Elon Musk had a better view of the festivities over people who will be working for the president.

As Elon Musk and his billionaire brethren take power in Trump’s second term, the lack of legal guardrails — and the fading power of Big Media — is becoming an existential crisis.

The assembly of billionaires at Trump's inauguration was a display of wealth and power unlike any before. The display was all the more remarkable given how recently many in tech were politically naive or apathetic.

It was an eye-popping crack in the Donald/Elon bromance, which is being watched closely now that Trump has given Musk the power to roam the West Wing, where he is working out of an office on the second floor, and take a hatchet to government.

Mr. Bruni is a contributing Opinion writer. Ms. McLean is a contributing editor at Business Insider and an author of “The Smartest Guys in the Room,” a book about the collapse of Enron. Mr. Silver is the author of “On the Edge: The Art of Risking Everything.”

Jamie Dimon, the billionaire head of the U.S.’ biggest bank, lauded Tesla CEO Elon Musk, the richest man on the planet and a key part of President Donald Trump’s administration, this week, putting an end to years of head-butting between the billionaires’ companies as Dimon becomes the latest billionaire warming to Musk or Trump.

Get Latest and Breaking News about World. Todays Top News Headlines about World Politics, News on USA, Business News, and Current Affairs.

The three wealthiest Americans, Elon Musk, Jeff Bezos and Mark Zuckerberg, sat together Monday at the second inauguration of President Donald Trump.

TikTok allows "the Chinese Communist Party access to Americans’ personal and proprietary information — potentially allowing China to track the locations of Federal employees and contractors, build dossiers of personal information for blackmail,

The Microsoft co-founder and philanthropist is taking a break from the future to examine his past — and mulling where the billionaires now fit in.

The world's richest man, now firmly embedded in the Trump administration, has lost over $11 billion since the start of the year.