Mira Murati’s startup, Thinking Machines Lab, is losing two of its co-founders to OpenAI

Former OpenAI exec Mira Murati’s startup, Thinking Machines Lab, is saying goodbye to two of its co-founders, both of whom are headed back to OpenAI. Another former OpenAI staffer who went to work for Murati’s startup is also headed back to the company. Murati’s announcement made no mention of other departures. While talent moves between AI giants are common in Silicon Valley, the departure of co-founders from a startup less than a year after its founding is particularly notable. The loss of two co-founders simultaneously — especially when one served as CTO — could be perceived as a particularly meaningful setback for Thinking Machines, which had assembled a high-profile team of former OpenAI, Meta, and Mistral AI researchers.