How I Actually Build SaaS with AI in 2026 (No BS, Just What Works)

I see a lot of people talking about “AI will build your SaaS in X clicks” or "Coders are cooked because of X new model is out". This is BS, no product is 100% AI made. If you try to let AI do everything, you’ll end up with a broken, slow, soulless product nobody wants. So here’s the real way I build SaaS today. This is not theory. This is what I use every day. First, your stack matters more than you think. Use boring stuff. This is my go-to boring stack that always works: Next.js Tailwind Postgres ShadCN Drizzle Better Auth TypeScript Why? Because AI understands it well. You are not fighting your tools. If you pick some weird stack, your AI will hallucinate half your app. Second, stop trying to generate your UI with AI. This is where most people mess up. AI UI looks like trash. Always. No taste, no spacing, no feeling. You need to do this part yourself. This is literally your product. If your UI sucks, your SaaS is dead. Third, build onboarding first. Not features. Not dashboard. Not p