Jeff Dean and other top AI researchers are leaving Google to launch their own startup TechCrunchFour Top Google A.I. Researchers Form New Start-Up The New York TimesGoogle DeepMind Boss Demis Hassabis Steps Down From CEO Role GizmodoGoogle's AI reshuffle: Chief scientist Jeff Dean exits and Demis Hassabis steps down as DeepMind CEO CNBCThe next chapter of our AI momentum blog.google