Alphabet announced a major leadership overhaul on August 5, with DeepMind co-founder Demis Hassabis stepping down as CEO to become chairman of Google DeepMind and chief scientist of Alphabet. Koray Kavukcuoglu, DeepMind's chief technology officer, takes over as senior vice president with day-to-day operational control and will report directly to CEO Sundar Pichai. Simultaneously, Jeff Dean—Google's chief scientist, 30th employee, and co-founder of Google Brain—announced his departure after 27 years to launch an AI startup.
The shakeup marks a decisive shift of Google's AI center of gravity from London to California. Kavukcuoglu relocated from London to Mountain View last year; other senior researchers, including Sebastian Borgeaud (who leads a key coding effort), have moved west. Hassabis, who fought to keep DeepMind as an independent London research island since the 2014 acquisition for ~$650 million, cited the imminence of AGI as the reason for stepping back. Alphabet's stock fell 4% immediately after the announcement.
The reorganization follows missed milestones and talent losses: Gemini's flagship model remains unreleased despite a planned June launch, while Anthropic and OpenAI have recruited star Google researchers. Vinyals, who co-led Gemini development, also left the company. Google lost all eight original transformer paper authors to departures or moves away from foundation-model work. Dean co-founded Discovery Loop, a startup pitching full-stack AI infrastructure automation, with former Google colleagues.
For practitioners, this signals a strategic realignment: Google is consolidating frontier AI research under product-focused leadership and reintegrating DeepMind into the commercial AI pipeline. The London lab's historical autonomy—its moat—is being dissolved. For founders and researchers, the departure of Dean and Vinyals exemplifies increasing optionality outside Google. For customers, Google's delay in Gemini updates and the reorganization may signal continued execution challenges.