LibreChat (41,704 Stars) 2026: The Open-Source ChatGPT Interface with Multi-Model Support and RAG

LibreChat (41,704 stars) is the open-source ChatGPT alternative with multi-provider support, RAG, and a familiar UI. Here is the complete deployment guide.

💡 What You Will Learn

LibreChat (41,704 stars) is the open-source ChatGPT alternative with multi-provider support, RAG, and a familiar UI. Here is the complete deployment guide.

📜 Table of Contents

• The short answer
• Standout features
• Deploy with Docker
• Using it day to day
• Practical tips
• FAQ

The short answer

danny-avila/LibreChat (41,704 stars, TypeScript) is an open-source ChatGPT interface you can self-host. It supports OpenAI, Anthropic, Google, and any OpenAI-compatible endpoint, with features like conversation history, RAG (file Q&A), agents, and a plugin system - all behind a familiar chat UI.

Standout features

• Multi-provider: switch between models mid-conversation
• RAG support: upload files and ask questions about them
• Agents & tools: build assistant personas with tool use
• Full API: use it as a backend for your own apps
• Presets: save and share prompt configurations

Deploy with Docker

git clone https://github.com/danny-avila/LibreChat.git
cd LibreChat
cp .env.example .env   # add your API keys
# optional: use the sample docker-compose for RAG support
cp docker-compose.override.yml.example docker-compose.override.yml
docker compose up -d
# Open http://localhost:3080

Using it day to day

• Create multiple endpoints in settings - e.g. OpenAI + local Ollama.
• Upload a PDF in a conversation to activate file Q&A (RAG).
• Build agents with custom system prompts for repeated tasks.

Practical tips

• Set ALLOW_REGISTRATION=false for a private instance.
• Backup the MongoDB volume - it stores conversations and settings.
• Use the API endpoints to integrate LibreChat with other tools.

FAQ

Is it free? Yes - MIT licensed open source.

Does it need MongoDB? Yes - the default deployment uses MongoDB for storage.

Can it replace ChatGPT Plus? For many users yes - same chat experience, your choice of models, and your data on your server.

❓ FAQ

Is it free?

Yes - MIT licensed open source.

Does it need MongoDB?

Yes - the default deployment uses MongoDB for storage.

Can it replace ChatGPT Plus?

For many users yes - same chat experience, your choice of models, and your data on your server.