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.

Other big technology companies have been boisterous in their courtship of the new administration. But Nvidia and Microsoft have avoided the Washington spotlight.

An apparent breakthrough in efficiency from the Chinese start-up did not make tech’s biggest companies question their extravagant spending on new data centers.

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.

President Trump had sued Meta and other tech firms in 2021, arguing that he had been wrongfully censored by them. Meta also reported revenue and profit growth for the fourth quarter.

The tech giant’s revenue was up 12 percent to $69.6 billion, but investors are showing their nerves after a long boom for tech stocks.

The tech industry has had an insatiable appetite for Nvidia’s chips over the last two years. But the feast may be over sooner than many had expected.

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

Much of the capital investment, a big jump from 2024, will fund expansion of Meta’s data centers, which provide the computing power needed by A.I. products and algorithms.

New rules aim to keep advanced technology out of China and to ensure that cutting-edge artificial intelligence is developed by the United States and its allies.

The tech industry is fighting new regulations, expected soon, that aim to keep the cutting-edge technology in the United States and allied countries.

Constellation Energy’s deal to buy Calpine is being driven by fast-rising demand for electricity in part by the technology industry’s investments in artificial intelligence.

Hussain Sajwani, the founder and chairman of DAMAC Properties of Dubai, built the first Trump-branded golf course in the Middle East a decade ago.