Replit is an AI-powered software development platform that has evolved from a browser-based coding environment into a full "build an app from natural language" agent platform. It was founded in 2016 by Amjad Masad, Faris Masad, and Haya Odeh, initially as a collaborative online IDE before AI capabilities became the company's central product focus.
Replit closed a $400 million Series D at a $9 billion valuation in March 2026, tripling its valuation in just six months after a $250 million round at $3 billion the previous September. The rapid succession of raises reflects strong investor interest in AI coding agents specifically, a category that accelerated sharply through 2025 and 2026 as autonomous code-generation tools matured beyond simple autocomplete.