Dify: Build LLM Apps Without the Plumbing

Ever wanted to prototype an LLM-powered app but got stuck on the boring parts: RAG pipelines, agent orchestration, API management? Dify is an open source LLM app builder that handles all that scaffolding so you can focus on the actual logic.

It’s not another LLM wrapper. It’s a full visual builder with built-in retrieval augmented generation (RAG) and agent workflows. Think of it as a low code / pro code hybrid for building AI apps. You drag, drop, and configure, but you still have full control over the underlying models, prompts, and data.

What It Does

Dify lets you compose LLM applications by connecting models, knowledge bases, tools, and workflows through a visual interface. Under the hood, it manages:

• RAG pipelines – automatically chunk, embed, and retrieve from your own documents (PDFs, websites, databases)
• Agent workflows – define multi-step reasoning with tool calls, conditionals, and loops
• Model agnostic – works with OpenAI, Anthropic, local models via Ollama, Hugging Face, and more
• API first – every app you build automatically gets a REST API, so you can integrate it into your existing stack

You can start with a prompt, add a knowledge base, configure tools (like web search or image generation), and ship an API endpoint in minutes.

Why It’s Cool

Most low code AI tools are black boxes. Dify is open source, which means you can:

• Self host – no vendor lock in, no data leaving your infra
• Inspect and customize – the whole pipeline is configurable (chunking strategy, embedding model, re ranking)
• Use your own models – swap GPT for Llama 3 or Mistral without rewriting anything
• Monitor and iterate – built in logs, prompt versioning, and A/B testing for prompts

The agent workflow editor is especially neat. You can create branching logic, call external APIs, and let the model decide when to use each tool. It’s like building a state machine but with LLM reasoning at each step.

Use cases: internal knowledge Q&A bots, customer support triage, content generation pipelines, or even multi tool agents that combine search, code execution, and data lookups.

How to Try It

The easiest way is to follow the quick start guide:

git clone https://github.com/langgenius/dify.git
cd dify/docker
cp .env.example .env
docker compose up -d

Then open http://localhost:3000