Mira Murati’s Thinking Machines Lab loses exec to Mark Zuckerberg’s AI team; company says: ‘Andrew has decided to …’

Mira Murati’s AI startup, Thinking Machines Lab, has seen co-founder Andrew Tulloch depart for Meta Platforms. Tulloch, a former Meta employee and AI researcher, is rejoining Mark Zuckerberg’s expanding AI division. The startup, which launched in February 2025, stated Tulloch left for personal reasons but remains focused on its mission.