BUILDER REALITY CHECK: Vibe-Coded SaaS Is Now the Default — YC Batch ~95% AI-Generated — But Carries a Measurable Security Tax

Superframeworks·low signal

Mid-June coverage reports YC's latest batch is roughly 95% AI-generated code, with founders shipping SaaS MVPs in days as Cursor/Claude Code cut build time 3–5x and free tiers (Supabase/Vercel/Resend) widen. The counter-signal: ~45% of AI-generated code contains security vulnerabilities and ~40% has exploitable bugs — meaning the cannibalization of paid SaaS by solo vibe-coders is real but underwrites a growing remediation/security-tooling market. The builder takeaway is that speed-to-ship is no longer the differentiator; verification and hardening are where the defensible work moved.