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yichuan-w/LEANN

LEANN is an innovative on-device vector database enabling private, efficient, and fast Retrieval Augmented Generation (RAG) across all your personal data with significant storage savings.

Core Features

Achieves 97% storage savings for vector indexes without accuracy loss.

Ensures 100% data privacy by processing all RAG operations locally on your device.

Supports semantic search across diverse personal data sources like files, emails, browser history, and chat logs.

Utilizes graph-based selective recomputation for on-demand embedding generation, minimizing storage.

Offers a portable knowledge base, allowing easy transfer between devices.

Detailed Introduction

LEANN democratizes personal AI by transforming any laptop into a powerful RAG system. It stands out as the world's smallest vector index, achieving up to 97% storage savings compared to traditional solutions, without compromising accuracy. This is accomplished through an innovative graph-based selective recomputation method that computes embeddings on-demand, rather than storing them all. LEANN enables fast, accurate, and completely private semantic search across a wide array of personal data, from file systems and emails to browser and chat histories, all with zero cloud costs.