President Donald Trump spoke with OpenAI CEO Sam Altman by phone on Friday, ahead of the AI infrastructure announcement, CNBC has learned.

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

Sam Altman participates in a discussion during the Asia-Pacific Economic Cooperation (APEC) CEO Summit in November 2023 in San Francisco. Altman's sister, Ann, has filed a lawsuit accusing him of sexual abuse. (Eric Risberg, Associated Press file photo) AP

Knowing how to ask the right questions is more valuable than knowing the answers, says OpenAI CEO Sam Altman — especially as artificial intelligence improves.

OpenAI Chief Executive Officer Sam Altman is reportedly set to meet with U.S. government officials in Washington D.C. on Jan. 30 for a closed-door briefing on new technology, possibly “Ph.D.-level super-agents” that do complex human tasks.

"My sister has filed a lawsuit against me," Sam Altman posted on X over the weekend, and what he's being accused of in the complaint is shocking. CNN reports that Ann Altman filed her suit against the OpenAI CEO on Monday in federal court in Missouri,

WASHINGTON — President Trump unveiled a $500 billion artificial intelligence infrastructure project Tuesday at the White House alongside reps from three tech and investment giants — with those business leaders asserting the initiative could cure cancer.

Annie Altman sued her brother, OpenAI CEO Sam Altman, on Monday alleging that he sexually assaulted and abused her for about a decade beginning in the late 1990s. Here's what we know.

US President Donald Trump on Tuesday (January 21) unveiled 'Stargate', a USD 5 billion AI infrastructure project by OpenAI, SoftBank and Oracle. The unveiling took place at White House and chiefs of OpenAI,

Sam Altman, the head of OpenAI — the company that created ChatGPT — has been accused by his sister of sexually abusing her while they were both children. Now, he is hitting back at the claims and painting his sister as someone suffering from mental health issues.

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.

Trump announced Tuesday that OpenAI, Softbank and Oracle would join forces to create Stargate, a new company investing $500 billion in AI infrastructure.