Inside Fei-Fei Li’s $1 billion new AI company, World Labs

Walking into World Labs—the San Francisco startup cofounded by Fei-Fei Li, known in tech circles as the “godmother of AI ”—visitors are met with a wall tiled in rainbow hues. A grand piano beckons at the end of the deep, sunlit lobby. Chair-size iridescent spheres rest against the walls, as if a giant forgot to pick up his toys.