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

Elon Musk was inside the White House complex when his phone started buzzing. Sam Altman was about to take the stage with ...

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

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