Alex LeBrun is a serial entrepreneur who has spent two decades at the frontier of AI — before it was a buzzword. He founded one of the earliest conversational AI companies, VirtuOz (acquired by Nuance/Microsoft), and Wit.ai (acquired by Meta). He later co-founded Nabla, bringing AI to the high-stakes world of medicine. A graduate of École Polytechnique, Alex's career is defined by a single obsession: closing the gap between AI research and the real world.