Langflow

A visual builder for AI agents and retrieval workflows in Python, where every flow can also be served as an API or as a tool for other agents.

156k stars, 10.3k forks Python On GitHub since February 2023

Visit website View on GitHub How to run it

What is Langflow?

Langflow gives you a drag-and-drop canvas for chaining models, vector databases, prompts and tools into agents and RAG pipelines. Each component is Python code you can open and change, and a playground lets you test a flow step by step. A finished flow can be called over an API, exported as JSON or exposed as an MCP server for other AI clients. There is also a desktop app for Windows and macOS.

Good fit if

  • You prototype AI agents and want to see and test each step instead of reading framework code.
  • Your developers want to change components in Python rather than work around a closed node library.
  • You need an MIT license with no usage conditions.

Look elsewhere if

  • You want business automation between SaaS apps, with triggers and schedules: n8n or Activepieces are built for that.
  • You need built-in workspaces for many teams and a management console: Dify offers more around the builder.

Before you adopt it

Langflow is MIT-licensed, with no paid parts in the repository. The bundled Docker Compose setup runs about 11 services, including PostgreSQL, Redis and RabbitMQ, so a production install is more than a single container. Roughly two thirds of recent commits come from one developer.

Drafted with AI from the project's README and repository data, then checked against that data on 30 October 2026. Report a correction

Langflow health: is it still maintained?

85 of 100, actively developed

  • Activity
    921 commits in the last 90 days, the latest on 30 October 2026.
    30 / 30
  • Contributors
    13 people wrote the latest 100 commits; the most active wrote 68% of them.
    15 / 20
  • Releases
    15 releases in the last 12 months; the latest, v1.13.0, on 22 October 2026.
    19 / 20
  • Replies to issues
    Maintainers answered 78% of recent issues, with a median first reply after 2 days.
    16 / 20
  • Security practices
    No OpenSSF Scorecard for this repository yet, so this part gets a neutral score.
    5 / 10

Read from GitHub on 1 November 2026. How the score works

Langflow license: is it open source?

Langflow uses MIT, an open-source license approved by the OSI.

  1. February 2023First published on GitHub.
  2. TodayMIT.

How to run Langflow yourself

Docker
Dockerfile or compose file in the repository
Compose file
deploy/docker-compose.yml: 11 services (proxy, postgres, redis, rabbitmq)
Setup effort
4 of 5, judged from the compose file
Kubernetes
No Helm chart in the repository
Desktop and mobile
No app builds in GitHub releases
Interface languages
8 languages

Install instructions: langflow.org or the README on GitHub.

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Questions about Langflow

Is Langflow open source?

Yes. Langflow is published under MIT, an OSI-approved open-source license.

Is Langflow still maintained?

Its health score is 85 of 100 (actively developed). It had 921 commits in the last 90 days, the latest on 30 October 2026, and its latest release came out on 22 October 2026.

How do I run Langflow?

You can run it with Docker. The README on GitHub has the exact steps.

What are the alternatives to Langflow?

Close alternatives in the Workflow automation category include Kestra, Trigger.dev, Hatchet.