I built an AI SaaS product in one day, starting with no idea at all. You'll see the whole run: research agents scanning 60,000+ comments to find a real pain point, the branding and waitlist page, the app itself with Supabase auth and Stripe subscriptions, a security review that caught four high-severity release blockers, and a live domain at the end.
Then I go over what happens after the build, such as getting your first 50 customers, pricing without guessing, and why I'd pay small creators before putting a dollar into ads. If you've been sitting on an idea, this should show you how much of it you can actually do yourself.