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Hosting limits

Publishing (Fly hosting / LIVE URL) is available on Free and Pro, gated by the shared credit balance. Free hard-pauses when credits hit zero (no Free top-ups). Pro can buy more credits. Free can also use Neon database and app storage in Preview and on LIVE apps (storage capped at 1 GB on Free). Neon pauses compute when idle so tables stay across short sandbox sleep; abandoned Free Preview infra may be cleaned up after ~14 days if there is no LIVE deployment. Published apps and attached databases spend from the same credit balance as chat. Usage UI still labels this spend as Run.

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Included

Run usage covers published compute and database usage. Bandwidth is included — we don’t bill egress. A background meter samples LIVE apps about every 5 minutes.

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Empty balance

When the credit balance hits zero:
  • Chat / build is blocked
  • LIVE apps pause — Fly machines are stopped; your database, files, and the published URL are kept
  • Preview + terminal stay available
  • Free users upgrade or wait for the daily grant; Pro users can top up
You’ll get a low-credit email when balance is very low and a LIVE app is still running (at most once per day). If a published app pauses because credits hit zero, we email you; when credits come back and it goes live again, we email you that it’s back. Free users who used yesterday’s credits also get a morning email when today’s 10 are ready.

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Practical advice

  • Prefer scale-to-zero friendly apps
  • Cache static assets
  • Top up or upgrade before a marketing launch if you expect traffic