How much does it cost to host an app you built with AI?

Short answer: often nothing. Most tools people build with AI for their work, like a calculator, a form or a small dashboard made in a chat with Claude, ChatGPT or Gemini, are a single web page, and many hosting services run pages like that on a free plan. Costs start when your tool saves data, uses AI or needs its own server. Even then, the hosting itself is rarely the expensive part. What takes money and time is everything around it once your colleagues or clients start using it: who can open it, whether it is safe, and who fixes it when something breaks.

How much does hosting cost per month?

It depends on what your tool does, not on how it was built. Roughly four types:

A simple tool that runs in your browser

Most tools built in a chat are like this: one page with everything in it. Nothing needs to run on a server, so it usually fits within a free plan. Typical cost: free.

A tool that saves data

If your tool collects form entries or keeps shared information, that data needs a home, usually a database. Small projects usually fit within a free plan, and costs grow with the number of people using it and the amount of data. Typical cost: free at first, then it grows with use.

A tool that uses AI

Every time someone uses the AI part, the AI company charges a small amount. This is often the cost that grows fastest. It also raises a safety question. To use an AI service, your tool needs an API key: a secret code that works like a password and is linked to your bill. Anything inside a web page can be read by anyone who opens it, so a key in your tool is a key for the whole internet. Typical cost: pay per use, plus somewhere safe to keep the key.

A tool that needs its own server

Bigger apps, usually built with coding tools rather than in a chat, run code on a server, for example to let people log in. Free plans exist, but limits arrive sooner and the setup is more technical. Typical cost: free to start, paid sooner than the other types.

Why is hosting so cheap now?

Because the computing power behind it has become cheap and interchangeable. A recent example: the startup Agent37 launched on Hacker News, a popular forum for tech founders. It rents out space to run AI assistants, a much heavier job than showing a simple tool. According to the founder, customers spend about 37 cents a month on average, and a free account costs the company 5 to 10 cents a month to run. Those are the company's own figures, not an independent study.

Commenters under the launch expected a price war: when everyone can offer the same computing power, prices only go one way. Whoever is right about that company, the direction is clear. Simply running a tool is no longer where the value is.

If hosting is nearly free, what are you actually paying for?

Once other people use your tool, different questions show up. None of them are about computing power:

• Who can open it? A tool for one client, for your team or for anyone needs different doors: private, behind a password, or an open link.
• Is the basic setup safe? No secret keys in the page, and no way for one tool to reach another tool's data.
• Where does the data go? Where do entries land, who can read them back, and can you take them with you?
• Will you know when it breaks? A tool that fails quietly is worse than no tool. Your colleagues need an easy way to tell you.
• Can you change it safely? Every fix is a chance to break something. Being able to undo a bad update matters more than a promise that the site never goes down.
• Is anyone looking after it? As we wrote in Are vibe-coded apps safe?, people trust a tool because someone looks after it, not because of how it was made.

That is what people pay for once running is free: control over access, a safe setup, feedback and a way back.

Is free hosting good enough for a tool you built with AI?

For a tool only you use: usually yes. A free host and a link you keep to yourself is fine.

Once colleagues or clients rely on it: often not, and not because of the hosting. Free hosting gives you a page that runs. It usually does not give you control over who can open it, a safe place for the data, a way to hear about problems or an undo button. You end up arranging those yourself, or doing without.

How do you choose where to host a tool you built with AI?

Try this test. Imagine the place your tool lives disappears tomorrow. What would you have to do yourself?

• If the answer is "upload the file somewhere else", the hosting was never worth much. Do not pay extra for it.
• If the answer is "set up sharing and passwords again, find out where my data went, work out which version was the last good one, and tell my colleagues", that is what you were really paying for. Pick the place that does that work well.

Then check the practical fit:

• Does it run your type of tool? A host for simple pages cannot run a server, and a server host is more than a simple tool needs.
• Where does the API key live? If your tool uses AI, make sure no key ends up in the page.
• Can you get your data out? An export button is cheap insurance.
• Can you go back? Look for a version history, not just "upload again".

Where does Toolcrow fit?

Our view: build the tool anyway, but put it somewhere safe. Toolcrow is a safe place for the tools you build in a chat. You paste or upload your tool and it runs, without setting up a hosting account, a database or a server, so the basics are right from the start. New tools are private by default, and you choose who else gets in: people with a password, or anyone with the link. Data your tool collects, such as form entries, gets a built-in place where you can view and export it. Each tool runs in its own shielded space, AI features work without an API key in your page, and you can switch on a feedback button so your colleagues can tell you when something breaks. Every update is saved as a version you can undo.

Toolcrow does not run tools that need their own server, the fourth type above. It is free to start. If you have a tool sitting in a chat, here is how to share a Claude artifact as a live link you control.