Jeff Dean, who has spent 27 years at Google and was serving as its Chief Scientist, has announced he is leaving to start his own company. The new venture is called Discovery Loop, and Dean isn’t going alone. Announcing Discovery Loop! Discovery Loop wants to use frontier AI models along with large-scale compute to run that loop automatically, and to run thousands of iterations of it in parallel instead of one at a time. @Google will support as a… — Sundar Pichai (@sundarpichai) August 5, 2026Demis Hassabis replaces Jeff Dean as Chief Scientist at Alphabet.