Google on Wednesday revealed an overhaul of its AI leadership, as its chief scientist for nearly three decades exits – the latest in a string of high-profile departures to plague the tech giant in its struggle to pull ahead in the artificial intelligence race. Demis Hassabis, chief executive of Google DeepMind, will become the company’s chairman and chief scientist, while Google DeepMind’s technology chief, Koray Kavukcuoglu, will lead work on Google’s new Gemini 4 model, Google CEO Sundar Pichai announced in a post on X. Jeff Dean – Google’s current chief scientist and one of the company’s first employees, working...