Google is reshuffling its artificial intelligence leadership, with DeepMind CEO Demis Hassabis stepping away from day-to-day management. Multiple outlets report that Alphabet CEO Sundar Pichai announces changes in which Hassabis takes on a new role as chair of Google DeepMind and also becomes chief scientist at Alphabet. Reports also say Hassabis continues to lead Isomorphic Labs, Alphabet’s AI-focused drug discovery effort.

At the same time, Google chief scientist Jeff Dean leaves the company. Several sources describe Dean as a veteran research leader within Google’s AI organization, and note that he plans to launch a new startup. Other high-profile researchers are also reported to be departing around the same period.

The leadership changes are covered as part of a broader AI strategy shift at Google, occurring amid intense competition in foundation models and ongoing attention to Google’s Gemini roadmap. Some outlets also link the news to market reaction, noting that Alphabet’s shares fall after the announcement, though the underlying reasons are not detailed beyond the leadership update.