Google shakes up AI leadership. Demis Hassabis steps down as CEO of DeepMind, and Jeff Dean leaves.

Google is shaking up its AI leadership, with some of the company’s top experts in the field moving roles or leaving.

Shares of the tech giant fell on the news.

Demis Hassabis is stepping down as CEO of DeepMind to take on a broader role at Alphabet, Google’s parent company.

Hassabis, one of the pioneers of modern AI, will become chief scientist of Alphabet and chair of Google DeepMind, CEO Sundar Pichai said in a blog post on Wednesday.

Jeff Dean, a leading AI researcher who’s been at Google for 27 years, is leaving to start his own initiative with Sanjay Ghemawat, another top tech leader at the search giant.