Earlier this month, it appeared that only two of the 11 co-founders at Elon Musk's AI venture, xAI, remained with the company. Now, reports indicate that those final two co-founders, Manuel Kroiss and Ross Nordeen, have also exited.

According to recent information, Kroiss informed colleagues of his departure from xAI, while Nordeen reportedly left the company last Friday.

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Musk recently stated that xAI "was not built right [the] first time around," and is consequently "being rebuilt from the foundations up." This restructuring coincides with the company's recent acquisition by Musk's SpaceX, which now brings SpaceX, xAI, and X (the platform formerly known as Twitter) under a single corporate structure. This consolidation is happening as SpaceX is said to be preparing for a public offering.

Both Kroiss and Nordeen reported directly to Musk. Kroiss was responsible for leading the company's pretraining team, and Nordeen served as Musk's "right-hand operator." Nordeen reportedly joined xAI from Tesla and was involved in orchestrating significant workforce reductions at Twitter following Musk's acquisition of the company in 2022.