Lovable and Bolt are the two names that come up in every vibe coding conversation. Both let you describe an app in natural language and get working React code in under a minute. The generated code is often comparable. The difference is what happens when you try to run that code with real users on real infrastructure.
We deployed identical applications on both platforms and ran the same battery of infrastructure tests. Here's what we found.
Bottom line: Lovable edges out Bolt on cold starts (847ms vs 920ms p50) and handles concurrent users slightly better (breaks at 200 vs 200, but with lower error rates at each step). Lovable's Supabase integration gives it a real database advantage over Bolt's SQLite default. Neither platform survives past 500 concurrent users.
| Metric | Lovable | Bolt | Winner |
|---|
p50 / p95 / p99 comparison
Percentage of failed requests at each concurrency level
This is the part that matters and the part neither platform's marketing mentions.
| Aspect | Lovable | Bolt |
|---|---|---|
| Runtime | Proprietary | Proprietary |
| Database | Supabase (Postgres) | SQLite (file) |
| CDN | Custom CDN | Shared CDN |
| Connection pooling | Yes | No |
| Real-time / WebSocket | Supabase Realtime | None built-in |
| Max connections | 60 | 1 |
If you're choosing between Lovable and Bolt for a project that needs to handle more than one user at a time — and that's the bar we're setting here — Lovable is the better bet. The Supabase integration gives you a real database from day one. Bolt's SQLite default is a liability that most users won't discover until they're already committed.
That said, neither platform is built for production scale. Both hit a wall before 500 concurrent users. If you're building something people will actually use, look at the Lovable vs OpenKBS comparison for what infrastructure-first looks like.