# Langflow

> Open-source visual builder for AI agents and MCP servers

Langflow is an open-source, Python-based tool for building AI agents, retrieval (RAG) applications and other LLM workflows by connecting components on a visual canvas. Flows are tested in a built-in playground, then run through an API, exported for Python apps or exposed as MCP servers. It is MIT licensed and free to run with Langflow Desktop, Docker or a Python package, and IBM sells an optional support subscription for teams that run it themselves.

- **Category:** AI Agents
- **Made by:** Langflow (IBM)
- **Website:** https://www.langflow.org
- **Runs on:** Web, macOS, Windows, Linux
- **Facts last checked:** Oct 9, 2026

## Pricing

Langflow has a free plan.

- **Pricing model:** Free plan
- **Free plan:** The whole application is open source under the MIT license and free to run with Langflow Desktop, Docker or the Python package. You supply the infrastructure and the model access.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| Langflow OSS | Free | The full MIT-licensed application, run with Langflow Desktop on macOS or Windows, a Docker image or the Python package. |
| IBM Elite Support for Langflow | Custom | Optional subscription to IBM technical support for open-source deployments you run yourself. It covers support only and includes no software license. |

Read from https://www.langflow.org/ on Oct 9, 2026. Prices change, so confirm with Langflow before buying.

## Key features

- **Visual flow editor:** A flow is built by dragging component nodes onto a canvas and connecting them. Each component is one step, with parameters you fix or override at run time.
- **Playground:** Test a flow and see its logic and responses in real time without building the rest of the application, or run a single component on its own.
- **Agents and tools:** Agent components can call other components and whole flows as tools, running as a single agent or as several working together.
- **MCP server and client:** Flows can be exposed as tools through Langflow's MCP server, and Langflow can connect to external MCP servers as a client.
- **API and deployment:** Flows run from your own code through the Langflow API or are exported as JSON. The docs cover Docker, Kubernetes, remote servers and cloud providers.
- **Custom Python components:** Components are written in Python, so you can edit the ones provided, write your own or install components shared by other users.

## Good for

- Developers prototyping agent and RAG applications on a canvas
- Teams that want to self-host an MIT-licensed builder
- Turning flows into API endpoints or MCP tools for other applications

## Worth knowing

- The docs cover only self-managed installs: Desktop, Docker, the Python package or Kubernetes. The homepage mentions a free cloud account but links no sign-up.
- Langflow Desktop is for macOS 13 or later and Windows, and lacks some features such as the Shareable Playground and Voice Mode.
- On Intel Macs, the ML and AI components that depend on PyTorch are limited or unavailable.
- The team gives no individual support by email: help comes through GitHub and community channels unless you subscribe to IBM Elite Support.

## Works with

OpenAI, Anthropic, Ollama, Amazon Bedrock, Pinecone, MongoDB, Notion, Slack

**Tags:** AI agents, Open source, Self-hostable, Public API, Templates

## Alternatives

- [Dify](https://toolgpa.com/tools/dify): Open-source platform for building AI agents and agentic workflows. [Compare](https://toolgpa.com/compare/dify-vs-langflow)
- [Sim](https://toolgpa.com/tools/sim): Open-source workspace for building and running AI agents. [Compare](https://toolgpa.com/compare/langflow-vs-sim)
- [n8n](https://toolgpa.com/tools/n8n): Workflow automation and AI agents you can self-host. [Compare](https://toolgpa.com/compare/langflow-vs-n8n)
- [MindStudio](https://toolgpa.com/tools/mindstudio): No-code builder for AI agents, with 200+ models billed at cost. [Compare](https://toolgpa.com/compare/langflow-vs-mindstudio)
- [Gumloop](https://toolgpa.com/tools/gumloop): AI agent builder for teams, with unlimited seats on shared credits. [Compare](https://toolgpa.com/compare/gumloop-vs-langflow)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 9, 2026:

- https://www.langflow.org/
- https://www.langflow.org/desktop/
- https://www.langflow.org/contact-us/
- https://docs.langflow.org/
- https://docs.langflow.org/get-started-installation
- https://docs.langflow.org/deployment-overview
- https://docs.langflow.org/macos-support
- https://docs.langflow.org/contributing-github-issues
- https://docs.langflow.org/luna-for-langflow
- https://www.ibm.com/docs/en/esfl?topic=elite-support-langflow-specification
- https://github.com/langflow-ai/langflow

Page: https://toolgpa.com/tools/langflow
Listed by ToolGPA (toolgpa.com).