All 11 xAI Founders Left, Elon Musk Rebuilds After Leadership Exodus

All 11 co-founders of xAI, Elon Musk's AI company, have now left. This marks a significant leadership shake-up as the company undergoes a major rebuild. The departure of the co-founders, including the last one, leaves Musk in charge.

xAI, the AI company co-founded by Elon Musk, has experienced a complete turnover among its founding team. All 11 original co-founders have now departed, with Ross Nordeen, Musk's "right-hand operator" who previously came from Tesla, being the last to leave on March 28. The departures accelerated in early 2026, with multiple founders exiting within days of each other amid reported tensions over performance demands.

The exodus has been notable for its breadth: departures include Igor Babuschkin (left to start a VC firm in August 2025), Greg Yang (health reasons), and Tony Wu and Jimmy Ba (who left within 24 hours of each other in February 2026). At least one co-founder, Kyle Kosic, returned to rival OpenAI. Musk acknowledged the situation publicly, stating that xAI "was not built right first time around, so is being rebuilt from the foundations up".

Despite the leadership upheaval, xAI retains significant assets: the Colossus supercomputer with over 200,000 NVIDIA H100 GPUs (one of the world's largest training clusters) and access to X's 1 billion+ user base for Grok deployment. The company's February merger with SpaceX, valued at a combined $1.25 trillion, provides additional capital and engineering resources. Industry analysts note that the talent market for AI researchers in 2026 is intensely competitive, with Meta offering packages up to $300 million over four years to retain top talent.