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Google reshuffles AI leadership as Hassabis steps back, Dean exits

The reorganization concentrates Gemini development under one executive as investors question Google's edge over OpenAI and Anthropic.

• Google announced on August 5, 2026 that Demis Hassabis is stepping down as CEO of Google DeepMind to become its Chair and Alphabet's Chief Scientist, while 27-year veteran Jeff Dean is leaving the company.
• Google DeepMind is Alphabet's AI research lab behind the Gemini models, whose consumer app has surpassed 950 million monthly users.
• Koray Kavukcuoglu, DeepMind's chief technology officer, becomes SVP overseeing daily operations and Gemini 4 development, reporting directly to CEO Sundar Pichai.
• Dean is departing alongside fellow Google veteran Sanjay Ghemawat, plus researchers Quoc Le and Oriol Vinyals, to found an AI-for-science startup called Discovery Loop, which Google plans to invest in.
• Alphabet shares fell as much as 4-5% in a single day following the announcement.
• The exits follow two other star Google AI researchers leaving for rival labs in June 2026, adding to a string of high-profile personnel departures.
• The shake-up shows Google streamlining AI decision-making into a single operational leader to move faster against OpenAI and Anthropic, even as it loses some of the researchers credited with building its AI foundations.