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Langflow

by IBM (DataStax)

Open-source visual low-code builder for AI agents and RAG apps

Agent PlatformSupervised
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Open-source visual low-code builder for AI agents and RAG apps

What it can do

  • Build flows on a visual canvas

    Supervised

    Arrange components (prompts, models, data connectors, tools) on a drag-and-drop canvas to define agent and RAG logic.

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  • Deploy flows as API and MCP servers

    Supervised

    Built-in API and MCP servers turn every flow into a tool that can be integrated into apps built on any framework or stack.

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  • Build RAG and multi-agent applications

    Supervised

    Supports major LLMs and vector databases to prototype, build, and deploy RAG and multi-agent applications.

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Overview

Langflow is an open-source, low-code visual builder for AI agents and RAG applications. It began at Logspace, was acquired by DataStax, and is now under IBM after IBM acquired DataStax; it remains open source with a large GitHub following.

What it does

Developers arrange components (prompts, models, data connectors, tools) on a drag-and-drop canvas to define logic, then deploy each flow with built-in API and MCP servers so it becomes a tool callable from any stack. It supports major LLMs, vector databases, and a growing tool library.

Classification note

Langflow is a building platform, not an end-user agent. The autonomy of any app you create is configured by you, so we list it as supervised-agent conservatively.

Integrations & setup

Self-host the open-source project, or use managed/cloud options. Model-agnostic, with MCP and API servers built in.

Pricing

Self-hosting is free and open source; managed and cloud options are available.

Best for / not for

Best for developers and teams who want to visually prototype and deploy agents and RAG apps and expose them as APIs/MCP tools. Less suited to those wanting a fully managed product or guaranteed autonomous behavior out of the box.

Alternatives

Flowise is the closest visual builder; Dify adds model management; Stack AI targets enterprise no-code; LangChain is the code-first library.

What people are saying

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