Describe your API. Fernfly writes the training data, trains a small model, and mints an endpoint. Natural language in, tool calls out, at a flat rate.
Left: without Fernfly. Right: with Fernfly.
Describe your app's features, or paste an existing API file. Fernfly figures out the rest in seconds.
Fernfly automatically writes hundreds of example conversations, trains a tiny AI on them, and tests it - all without you writing a single prompt.
Copy one URL and one API key. Paste into your app. Your users can now talk to it like they talk to ChatGPT.
Give us your address and we'll read your site, train a chatbot that can actually use it, and hand you an embed snippet. No API file, no account to set up first.
Build my chatbot freeAny public website. Nothing to install.
Crawl, train, and deploy. All automatic!
Your chat bubble goes live on your site.
Instead of dropdowns and filters, customers just say what they want.
Your users speak naturally. Lights, thermostat, locks all respond correctly.
Users ask for what they need instead of hunting through menus.
Give every user their own assistant, one that knows your app inside out.
No per-message fee. Train once, run as many queries as you want.
Trained on your own features and content, not generic internet knowledge.
Real conversations improve it. The more users talk, the better it gets.
Runs inside your app. User conversations never go to OpenAI or anyone else*.
Live accuracy scores on every version. Know when it's working and when it's not.
A single API call. Add it to any app (mobile, web, voice) in minutes.
* Fallback to a cloud AI model like Gemini is enabled by default to improve user experience. This feature can be easily turned off from project settings.
Free to start. No credit card. Set up in an afternoon.
Get started free