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Google chief scientist Jeff Dean leaving in AI reshuffle after 27 years at company

The company named Koray Kavukcuoglu to run daily AI operations as Demis Hassabis shifts to chairman and chief scientist.

  • On Wednesday, Alphabet announced a major leadership overhaul of its AI division, triggering a 4% selloff in shares to $361 in afternoon trading.
  • DeepMind CEO Demis Hassabis transitions to Alphabet chief scientist and chairman, while technology chief Koray Kavukcuoglu assumes day-to-day operations; longtime chief scientist Jeff Dean and three senior colleagues depart simultaneously.
  • Dean and colleagues are launching Discovery Loop, a public benefit corporation focused on science and engineering, with Alphabet serving as founding investor and cloud partner.
  • Investors fear the reshuffle signals a "brain drain" at a delicate moment, as Google trails rivals OpenAI and Anthropic; the flagship Gemini model remains unreleased despite a planned June launch.
  • Despite Wednesday's drop, Alphabet shares remain up 16% year to date; market attention shifts to the Gemini Pro release, which prediction markets place at 76% probability by August 31.
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Lean Right

Google has announced changes in the bosses of its artificial intelligence divisions. There are veterans' exits, such as Jeff Dean, and changes in the IA DeepMind lab.

·Lisboa, Portugal
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Lean Right

DeepMind co-founder will take on long-term scientific research at Alphabet in a key move to accelerate development against OpenAI and Anthropic

·Madrid, Spain
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Lean Right

Google has announced a major reshuffle. Prominent AI scientists and engineers are leaving the company, while Nobel laureate and AI chief Demis Hassabis is transitioning to a key role.

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Brand Spur broke the news on Tuesday, August 4, 2026.
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