How Lovable vibecodes production software at scale

Vibecoding a beautiful, working prototype is easier than ever. Running a platform that non-developers use to ship production software is a different engineering problem. Today, software built on Lovable serves 600M+ monthly sessions. In this session, Fabian Hedin, Cofounder and CTO of Lovable, walks through the systems Lovable built to run Claude reliably at consumer scale — the fleet-learning layer that catches coding mistakes, the eval loop that gates every model release, and how to keep Lovable itself improving.