Mr. Musk spent the summer at his artificial intelligence start-up xAI, trying to match the runaway success of OpenAI. The result was chaos.

© Maansi Srivastava for The New York Times

J.P. Morgan, Blackstone and other financial giants are buying “industrial outdoor storage,” sites vital to logistics, trade and the construction of data centers.

© Taylor Austin Dorrell for The New York Times

Amazon, Microsoft, Google, Meta and OpenAI plan to spend at least $325 billion by the end of the year in pursuit of A.I. We explain why they’re doing it.

© Shira Inbar

The chipmaker, now the most valuable public company in the world, said strong demand for its chips should continue this quarter.

Beijing is taking an industrial policy approach to help its A.I. companies close the gap with those in the United States.