The companies racing to build artificial general intelligence have a problem that no amount of compute can fix: the people who actually built the technology keep walking out the door.
xAI, the Elon Musk-founded AI venture, lost six of its original 12 co-founders by late February 2026. By late March, every single one of the 11 original co-founders had departed. More than 80 researchers and engineers also left in that same window.
A company-by-company breakdown
xAI’s losses are the most dramatic, but the pattern extends across the entire industry. Google saw one of its most consequential departures when chief scientist Jeff Dean left after nearly 27 years at the company in February 2026.
At OpenAI and Anthropic, researchers raised alarms in February 2026 over strategic directions, particularly around advertising integration and the perceived deprioritization of safety research.
