Press Escape to close the menu.

A jury is about to weigh whether Sam Altman deceived Elon Musk into funding OpenAI with promises it would operate as a nonprofit for humanity’s benefit. But the legal team for the world’s richest man faces stiff challenges.

The years-long feud between Elon Musk and Sam Altman over OpenAI's founding heads to trial in California on April 27. | Jose Luis Magana/AP

SAN FRANCISCO — The years-long feud between Elon Musk and Sam Altman heads to trial in California today, threatening to blow up OpenAI’s leadership and unravel its hard-won corporate conversion.

Musk, an estranged co-founder of OpenAI who now leads competitor xAI, is claiming that the ChatGPT-maker and Altman abandoned their charitable mission by making moves to shift toward a for-profit model in partnership with Microsoft.