Sam Altman, already having a bad start to his week as a Chinese chatbot has put into doubt the lead of U.S. AI startups, is facing another headache. One of the other startups in his growing empire, ...

Elon Musk and Sam Altman lead rival AI firms and now take public jabs at each other — but it wasn't always like this. Years ago, the two cofounded OpenAI, which Altman now leads. Musk departed ...

Then Mr. Altman sneaked into the White House. By Cecilia Kang and Cade Metz Reporting from Washington At President Trump’s inauguration, Sam Altman, the chief executive of OpenAI, was relegated ...