Replit is the leading no-code app builder for consumers and enterprise, letting anyone with an idea build real, deployed software using natural language. The company just raised a $400 million Series D at a $9 billion valuation.
In this episode of Founder Firesides, co-founder and CEO Amjad Masad sat down with YC’s Andrew Miklas to talk about Replit’s 10-year journey from browser IDE to vibe coding platform, why the people getting the most value aren’t traditional devs but founders and domain experts closest to the problem, and what Agent 4 unlocks with parallel agents, built-in design, and the ability to run your entire company on Replit.
0:28 – Anyone Can Build Software
2:14 – The Rise of AI-Native Builders
4:52 – Not Just Developers Anymore
7:18 – What People Are Actually Building
10:36 – How Replit Is Spreading Everywhere
14:02 – What You Can Build (and What You Can’t)
19:22 – YC, Growth, and Early Lessons
23:18 – From Vibe Coding to Autonomous Agents
29:44 – The Future: Everyone Becomes a Builder
36:12 – What Skills Matter Now
Apply to Y Combinator: https://www.ycombinator.com/apply
Work at a startup: https://www.ycombinator.com/jobs
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