Elon Musk was inside the White House complex when his phone started buzzing. Sam Altman was about to take the stage with Donald Trump. Confused, Musk turned on the TV. What he saw sent him into a rage.

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.

The relationship between Sam Altman and Elon Musk goes back to the early days of OpenAI —then a nonprofit research lab. But now the two men find themselves in a very public feud over the billion-dollar AI company. Today on the show, we catalog their friendship turned feud and how the company that started it all still remains core to their beef.