Google announced on Wednesday that Demis Hassabis is stepping down as Google DeepMind CEO to become its chairman and Alphabet's chief scientist, focusing on AGI strategy, scientific applications and his drug-discovery spinoff Isomorphic Labs. CTO Koray Kavukcuoglu takes over daily operations as senior vice president, reporting to Sundar Pichai. Jeff Dean, one of Google's earliest and most celebrated engineers, is leaving after 27 years to found Discovery Loop, a public-benefit corporation for AI-driven science, together with Sanjay Ghemawat — with Google investing and serving as its cloud provider.