Editing vs. rebuilding — which is more credit-efficient?

Editing what you already have is almost always cheaper than rebuilding from scratch. Here's why, and the few times a fresh start actually wins.

Short answer: editing your existing app is almost always more credit-efficient than rebuilding it from scratch. If you have something that mostly works and you want to change part of it, edit it — don't start over.

Why editing usually wins

Every request the AI runs starts by reading and understanding your app. That understand the app step is the bulk of what a request costs, and it happens either way.

• When you edit, the AI reads your app, then makes a targeted change to the part you asked about. The rest of your app stays exactly as it is. One focused pass.
• When you rebuild from scratch, the AI regenerates the whole thing — every page, every piece of logic, all the wiring — and you lose the refinements you'd already dialed in. That's a full fresh build (typically 2,000–8,000 credits, most landing around 4,000–5,000), versus a typical edit (400–1,500 credits, most around 700).

So a single edit is usually several times cheaper than a rebuild — and you keep the work you already paid for.

The trap: rebuilding to fix one thing

The most common way people burn credits is rebuilding the whole app because one piece is broken or one page looks wrong. You almost never need to. Describe the specific thing you want changed and let the AI edit just that:

❌ Rebuild this app but make the dashboard cleaner.

✅ On the dashboard page, move the stats cards above the chart and use a lighter background.

The second one is a small, cheap edit. The first one throws away a working app to change one screen.

When a fresh start actually makes sense

Rebuilding can be the right call — just go in knowing it costs more:

• The direction changed completely. If what you want now is a fundamentally different app (different purpose, different data, different everything), editing your way there can take more back-and-forth than starting clean.
• You're stuck in a rabbit hole. If you've tried many edits on the same broken area and it keeps fighting you, sometimes rebuilding that piece (not the whole app) is faster than a tenth correction pass. Rebuild the page or feature, not the entire project.
• The app is an early throwaway. If it's a first rough draft you don't care about keeping, a clean re-describe is fine.

Even then, prefer rebuilding the specific part over the whole app whenever you can.

The habit that saves the most credits

Editing beats rebuilding, but the biggest saver is not repeating the same failed edit over and over. If two or three attempts on the same change haven't worked, stop and change your approach — or ask the team. Grinding the same prompt is where credits quietly disappear, whether you're editing or rebuilding.

What to read next

• Using your credits efficiently while building — the full dos and don'ts
• What are credits? — how the meter works and what each request costs
• Plan mode vs build mode — think first to avoid wrong-turn rebuilds