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When you send a prompt, Bilt’s AI builds your app step by step — writing the screens, wiring them together, and updating the preview as it goes. Knowing what to expect makes the wait a lot easier.

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What happens

1

You describe what you want

A sentence or a detailed spec — both work.
2

Bilt builds it

The AI writes your app one piece at a time. You’ll see progress stream into the chat as it works.
3

The preview updates

Your app appears in the live preview, ready to try.

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What to expect

  • A build can take a few minutes for a complex app. That’s normal — Bilt is doing real work for each step.
  • Progress shows up in the chat as it goes, so you can follow along.
  • Keep the tab open. Closing or refreshing mid-build interrupts the step it’s on.
If the chat goes quiet for a minute, it’s usually still working. If nothing changes after a couple of minutes, click Restart Server in the preview panel or send a short follow-up.

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Get faster, better results

  • Ask for one feature at a time instead of everything at once.
  • Attach a screenshot or mockup when you want a specific look — see Attaching images.
  • Be specific about what each screen does.
For the full approach, see Scoping and iterating on your app and the Prompting Guide.