Elon Musk’s last co-founder reportedly leaves xAI
techcrunch.com Mar 28, 2026

Elon Musk’s last co-founder reportedly leaves xAI

AI-summarised brief · reviewed before publication

Elon Musk's AI startup xAI has lost its last two co-founders, Manuel Kroiss and Ross Nordeen, according to Business Insider. Kroiss reportedly told people he's leaving, while Nordeen departed on Friday. Both men held key positions, with Kroiss leading the pretraining team and Nordeen serving as Musk's right-hand operator. The departures come after Musk stated xAI is being rebuilt from the ground up following its acquisition by SpaceX.