Google's Jeff Dean exits after 27 years as Hassabis steps down as DeepMind CEO
Google confirmed Wednesday that chief scientist Jeff Dean is leaving after 27 years and that DeepMind chief executive Demis Hassabis is stepping down as CEO, in the biggest leadership shake-up yet in the company's AI division. The moves follow a string of senior AI departures from Google this year. Alphabet shares fell after the announcement.

Google's chief scientist, Jeff Dean, is leaving the company after 27 years, and DeepMind chief executive Demis Hassabis is stepping down from the CEO role, the company confirmed on Wednesday. Both executives have been central to Google's artificial intelligence research since the earliest days of its AI push.
The departures follow a string of senior exits from Google's AI division over the past year, as rivals including OpenAI and Anthropic compete aggressively for top research talent. Analysts said the reshuffle raises questions about the stability of Google's AI leadership at a moment when the company is racing to keep pace with competitors on model development.
Alphabet shares fell following the announcement, with investors citing concern over the loss of senior AI talent. Google has not named permanent successors for either role, and the company said more details on its AI leadership structure would follow in the coming weeks.
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