Google shakes up AI leadership. Demis Hassabis takes on broader research role, and Jeff Dean leaves.

Demis Hassabis is becoming the chief scientist of Alphabet and chair of Google DeepMind. Shane Anthony Sinclair/Getty Images for Cannes Lions Demis Hassabis leaves DeepMind CEO role for a broader research position at Alphabet. Jeff Dean exits Google after decades to start a new initiative with tech leader Sanjay Ghemawat. Google has lagged in the AI coding race, and its next big AI model has been delayed this year. Google is shaking up its AI leadership, with some of the company's top experts…