The relationship between Elon Musk and Sam Altman progressed from an initial friendship to a bitter rivalry. Here's why.

In an interview with Bloomberg, Altman says OpenAI is “not for sale” and the bid is the latest of “tactics, many, many ...

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 ...

After helping President Trump get elected, Elon Musk was poised to dominate the country’s A.I. policies. Then Mr. Altman ...