FREE GUIDE
Fynl.io your own AI key: the AI runs on your bill
In Fynl.io every tool marked AI runs on your own Claude or ChatGPT API key, on your own bill. Paste the key in Account and every AI tool switches on.
Take it with you. The whole thing as a PDF — no sign-up, no email required.
Download the free PDFEverything marked AI runs on your key
Every tool in Fynl.io marked AI runs on your own Claude or ChatGPT API key. It lands on your bill, usually a few cents per task. Nobody else's key is ever used.
A chat subscription isn't an API key
A chat subscription and an API key are different things. You get the key from the console, set a monthly limit, and ten dollars is plenty to start.
Paste it in and test it
In Account, paste the key and press Save and test. Every AI tool switches on.
Questions people also ask
Whose key do the AI tools in Fynl.io use?
Yours: your own Claude or ChatGPT API key, on your own bill. Nobody else's key is ever used.
Is a chat subscription enough instead of an API key?
No. A chat subscription isn't an API key. You get the key from the console.
How much should I put on it?
Set a monthly limit. Ten dollars is plenty to start, and a task usually costs a few cents.
Do I need to sign up to get the PDF?
No. The free PDF on this page needs no sign-up.
What Fynl.io is, and where it fits
Fynl.io is one portal a small business runs itself on, instead of five subscriptions that do not talk to each other.
The AI runs on your own Claude or ChatGPT API key. You keep the key, you pay the model provider directly, and there is no markup on top of it. There is no SMS or phone calling yet, and we would rather say so than let you find out later.
You enter the key once in Account and every AI tool in the portal uses it, so the cost of the AI lands directly on your own bill.