GitHub Repo · AI Agents & App Builders

Langflow

A visual builder for AI agents and workflows that you can self-host.

What Langflow does

Langflow lets you build AI agents, document chatbots and multi-step AI workflows by connecting blocks on a canvas, then serve them as an API or MCP server. It supports most model providers and vector databases.

Best for

Prototyping AI agents visually
Document Q&A bots
Teams with a technical builder but no full-time developer

How small businesses use Langflow

Build a chatbot that answers from your SOPs
Chain AI steps to process inbound emails
Publish an agent as an API for your website

Quick facts
Type	GitHub Repo
Category	AI Agents & App Builders
Pricing	Free and open source; hosted options
Repository	github.com/langflow-ai/langflow
License	MIT
Setup level	Intermediate
Main tradeoff	You need to understand AI building blocks like models and vector databases to get good results.
GitHub stars	156k (as of 2026-10-21)
Added	Oct 16, 2026
Last reviewed	Oct 16, 2026

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Langflow: common questions

Who should use Langflow?

Langflow suits prototyping AI agents visually, document Q&A bots and teams with a technical builder but no full-time developer.

When should you choose something else instead of Langflow?

You need to understand AI building blocks like models and vector databases to get good results. If that matters for your business, compare other options such as Lovable, Replit and Dify.

Is Langflow free?

Langflow pricing: Free and open source; hosted options. Pricing changes often, so confirm current plans on the official repository or website before you buy.

Can a small business self-host Langflow?

Yes. Langflow is open source on GitHub, and its setup level is intermediate. You will need a computer or server to run it and someone to keep it updated and backed up, or you can use a hosted option if one is offered.