✅ 100% Free & Open Source

FastGPT — Free AI Knowledge Base & Workflow Builder (2026)

Build AI knowledge bases and automated workflows for free with FastGPT. Visual editor, document Q&A, and API deployment — all self-hosted.

📥 Download FastGPT — Free AI Knowledge Base & Workflow Builder (2026)

Click to download directly from the official website. No ads, no bundled software.

🔧 How to Install

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Step 1: Install Docker Desktop from docker.com

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Step 2: Open Command Prompt or Terminal

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Step 3: Type: docker run -d -p 3000:3000 ghcr.io/labring/fastgpt:latest

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Step 4: Wait 2-5 minutes for first-time download and startup

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Step 5: Open browser to http://localhost:3000

✨ Key Features

✓ Visual workflow builder with drag-and-drop nodes
✓ Document knowledge base with AI-powered Q&A
✓ Connect to any AI model (OpenAI, Claude, local LLMs)
✓ Deploy as web chat, API endpoint, or embed widget
✓ Team collaboration with user permissions
✓ Self-hosted — your data stays private

🎯 How to Use

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Step 1: Create a dataset — upload your documents (PDF, Word, text files)

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Step 2: Use the visual editor to build a workflow — drag and drop nodes

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Step 3: Connect nodes: Input → Knowledge Search → LLM → Output

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Step 4: Test your workflow in the chat panel — ask questions about your documents

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Step 5: When satisfied, click 'Publish' to make it available via API or web embed

Build AI applications visually, for free

FastGPT combines a visual workflow builder with AI knowledge base capabilities. Drag and drop processing nodes to create custom AI pipelines — from simple document Q&A to complex multi-step workflows. Publish your creation as a web chat widget or API endpoint.

FAQ

How is FastGPT different from Dify? Both are AI application platforms. FastGPT focuses more on knowledge base quality and precise retrieval. Dify has broader integration options. FastGPT’s workflow system is particularly strong for building structured knowledge Q&A applications.

What AI models does FastGPT support? All major models including OpenAI (GPT-4, GPT-4o), Anthropic (Claude), Google (Gemini), and local models via Ollama. You provide the API key for the model you want to use.

Can I embed the chat on my website? Yes. FastGPT generates an embeddable chat widget. Copy the provided code snippet into your website’s HTML and the AI chat appears on your page.

Is FastGPT really free? Yes, the self-hosted version is completely free and open source. There is a cloud-hosted version available with pricing for teams who prefer not to self-host.

💡 100% Free & Safe

All download links go directly to the official project websites. We never host or modify any files. No registration, no ads, no spyware.