Alphabet shares dropped 4% after Demis Hassabis, the co-founder of DeepMind, handed over daily operations of Google's flagship AI unit. The move caught investors off guard. Hassabis is shifting to a new role as Alphabet's chief scientist and chairman of Google DeepMind, a position designed to let him focus on artificial general intelligence research rather than running meetings and managing teams.
The timing stings. Google is still chasing its next major Gemini model, which missed an earlier June launch target. Meanwhile, OpenAI and Anthropic aren't slowing down. Hassabis framed the change as strategic, telling staff that AGI development demands his full attention. Sundar Pichai echoed the message, calling the shift vital for shaping the future of AI itself.
Koray Kavukcuoglu, who was Google DeepMind's chief technology officer, takes the operational helm as senior vice president. He'll keep his role as Alphabet's chief AI architect, meaning Google now has two people leading different angles of the same unit.
The broader exodus makes the stock movement less surprising. Jeff Dean, one of Google's most revered engineers and former chief scientist of Google DeepMind, is leaving to start a new company called Discovery Loop. Sanjay Ghemawat, Oriol Vinyals and Quoc Le are going with him. The startup will pursue machine learning and science research, with backing from Google and a cloud partnership already locked in. Dean built Google Brain from the ground up in 2011 and was instrumental in Gemini's development. Vinyals and Le were equally central to the project.
Alphabet didn't connect the departures to Hassabis's move, but the timing screams reorganization. When four senior AI architects walk out the door at the same moment your flagship researcher steps back, it signals something more than routine rotation. Google is betting that Hassabis as a pure researcher and Kavukcuoglu running day-to-day operations can keep the machine moving. Discovery Loop's founders clearly disagreed.
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