
A physicist who once studied how to see inside matter now wants to shorten the years between an engineer’s idea and a finished machine. At Prometheus, Vik Bajaj is taking that question to the scale of an industry.

Kyle Kosic helped keep GPT-4 training steady, joined xAI at its launch, and now works on personal AI at River. His career follows the infrastructure that makes ambitious models possible.

After building a store that rewired shopping and a rocket company that reached orbit, Bezos has returned to the CEO chair. At Prometheus, he and Vik Bajaj are trying to give engineers a new kind of tool for the physical world.