How to host an AI-built app cheaply
How to keep hosting costs low for a small AI-built app: let it rest when idle, cap AI spend and avoid paying for servers that sit unused.
A tool opened a few times a day should not cost the same as a busy website. Most of the money goes to servers that sit idle.
Where the money goes
- An always-on server billed all day for an app used for ten minutes.
- AI model calls with no cap, which can cost more than hosting.
- Databases and add-ons you set up “just in case”.
Ways to spend less
- Use a host where apps rest when idle and wake on the next visit (about a second on Cohostly).
- Send model calls through a gateway with a spend cap per app.
- Keep data in a spreadsheet or small managed store instead of a separate database server.
- Delete apps you no longer open.
What to check on any host
Ask whether idle time is billed, what happens when the app sleeps, whether there is a cap on usage, and whether you can see what each app costs. Check current pricing on the host’s own page, because plans change.
Deploying a cheap app
- Upload the folder, a .zip or a GitHub repo, or ask your assistant to deploy it over MCP. Cohostly shows draft settings first, and nothing goes live until you confirm.
- Keep startup light so wake-ups are quick.
- Set a monthly AI spend limit if the app calls a model.
Questions
Is there free hosting for AI-built apps?
Some platforms offer free tiers with limits. The reliable way to stay cheap is an app that rests when idle and a cap on model spend.
Why is my AI app bill high?
Usually model calls, not hosting. Put a cap on them.
Will a resting app feel slow?
The first visit after a quiet spell takes about a second, then it is normal.