Portal by LetBe.ai
An AI flow builder with the models built in
An AI flow builder lets you connect steps such as a prompt, a document lookup, a check and a reply into one flow that runs on its own. In LetBe.ai the models are built in and the flow runs hosted, so there is nothing to install and no keys to manage.
Free to start. No card needed.
What is an AI flow builder?
A flow is a chain of steps. One step reads the visitor's question, one looks it up in your documents, one asks a model for an answer, one checks that answer before it goes out. A flow builder is where you draw that chain and run it.
Most flow builders give you the canvas and leave the models, the hosting and the keys to you. LetBe.ai includes them. See how the builder works.
How a flow is built in LetBe.ai
Describe or drag
Type what the flow should do and the scenario builder drafts it, or drag ready blocks onto the canvas yourself.
Test in chat
Talk to the flow while you build it. Every reply shows which block produced it, so you fix one step, not the whole flow.
Publish
The flow gets a live address your site or software can call, and a chat page you can share by link.
Built-in models, hosted execution: what that changes
You never create an account with a model provider or paste an API key. You never rent a server or keep one running. The flow spends from a prepaid wallet that starts with free credits, and the pricing page shows current rates. That is the whole setup.
Flow builder or agent builder?
An agent decides what to do next; a flow follows the steps you drew. LetBe.ai does both on the same canvas: a flow can hand a step to a model that decides, and an agent can be pinned to a fixed flow where you need predictability. If you are comparing agent builders, the comparison page lists eight of them on the same questions, and the no code AI agent page explains what the blocks can do.
AI flow builder questions
Do I need my own model API keys?
No. The models are built in. You build, test and publish a flow without opening a provider account or pasting a key.
Where does the flow run?
On LetBe.ai. Publishing gives the flow a live address and a chat page, and there is nothing to host on your side.
Is the flow builder free?
Free to start. New accounts get free credits with no card. Later you top up a prepaid wallet and pay only for what runs.
Can I call a flow from my own app?
Yes. Every published flow has an HTTP address, an OpenAPI description and API keys you create yourself in the portal.
Free to start. No card needed. Pricing