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Langflow
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Added:10/22/2025
Type:Saas
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Pricing:
FREE
AI-PoweredMachine LearningCloud-BasedBrowser ExtensionNo-CodeOpen Source
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What is Langflow

Langflow is an open-source platform for building AI applications through a visual interface. You create workflows by connecting building blocks called components. Each component performs a specific task, such as loading data, talking to an AI model, or storing information in a database.

The platform supports agents that can make decisions, use tools, and perform multiple tasks automatically. It also enables Retrieval Augmented Generation (RAG), which lets AI applications search through your documents and provide accurate answers based on your specific data.

There is no cost to use Langflow. It's completely free and open-source. You only pay for external services you connect to it, such as AI model providers like OpenAI or cloud hosting if you choose to deploy your application online.

How to Use Langflow

Using Langflow is straightforward, even if you're not a programmer. Here's how to get started:

  • Download and install Langflow using a simple command, or use it directly in your web browser through their cloud platform.

  • Open the visual editor and select from pre-built templates or start with a blank canvas to create your own workflow.

  • Drag components from the sidebar onto your workspace. These include chat inputs, AI models, data sources, and output displays.

  • Connect components by drawing lines between them to define how data flows through your application.

  • Configure each component by adding your API keys and adjusting settings like which AI model to use or how to process data.

  • Click the run button to test your workflow. Use the built-in chat interface to interact with your AI application immediately.

  • Export your completed workflow as code or deploy it as an API that other applications can use.

Features of Langflow

  • Visual drag-and-drop workflow builder

  • Support for multi-agent AI systems

  • RAG (Retrieval Augmented Generation) capabilities

  • Compatible with all major AI models

  • Custom component creation with Python

  • Automatic API generation for workflows

  • Real-time testing and debugging tools

  • Integration with vector databases

  • Pre-built templates and examples

  • Open-source and completely free

  • Desktop and web-based versions

Langflow Pricing

Most Popular
Open Source

Free

What's included:
  • Unlimited workflows and agents
  • Visual drag-and-drop builder
  • All AI model integrations
  • RAG and multi-agent support
  • Custom component creation
  • Built-in API server
  • Desktop and cloud deployment
  • Community support via Discord
  • Access to all features
  • No usage limits

Langflow Repository

View on Github
Stars133,781
Forks7,842
Repository Age2 years
Last Commit6 days ago

FAQ's About Langflow

Is Langflow completely free to use?
Yes, Langflow is 100% free and open-source. You can download and use it without any cost. However, you'll need to pay for external services you connect to it, such as AI model APIs (like OpenAI) and cloud hosting if you choose to deploy online. Many of these services offer free tiers to start.
Do I need programming skills to use Langflow?
No, you can build basic AI workflows without coding using the drag-and-drop visual interface. However, having Python knowledge is helpful for creating custom components and advanced features. The platform is designed to be accessible to beginners while offering depth for experienced developers.
What's the difference between Langflow and LangChain?
LangChain is a Python framework for building AI applications through code. Langflow provides a visual interface built on top of LangChain, making it easier to create applications without writing extensive code. You can export Langflow projects as LangChain code when needed.
Can I use Langflow for commercial projects?
Yes, Langflow is open-source and free for commercial use. You can build and deploy AI applications for your business without licensing fees. Just ensure you comply with the terms of any external services you integrate, such as OpenAI or other AI providers.
What AI models does Langflow support?
Langflow supports all major AI models including OpenAI (GPT-4, GPT-3.5), Anthropic Claude, Google Gemini, and open-source models like Llama that you can run locally. You can use different models for different parts of your workflow, mixing free and paid options as needed.

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