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LlamaIndex

The best framework for RAG — index your documents, query with AI

Frameworks MIT Library Intermediate

Stats

GitHub stars★ 40k+
LicenseMIT
HostingLibrary
DifficultyIntermediate

Get started

Official docs and GitHub repo

Visit LlamaIndex ↗ View on GitHub ↗

What is LlamaIndex?

LlamaIndex specialises in Retrieval Augmented Generation — connecting LLMs to your data. It handles ingesting documents, chunking, embedding, indexing into vector stores, and retrieval. More focused than LangChain for data-heavy RAG use cases. Supports 160+ data sources and 40+ vector stores.

Quick start

1
pip install llama-index
2
from llama_index.core import VectorStoreIndex, SimpleDirectoryReader
3

docs = SimpleDirectoryReader("data/").load_data()

4

index = VectorStoreIndex.from_documents(docs)

5

index.as_query_engine().query("your question")

Use cases

Document Q&A over PDFs

Knowledge base chatbots

Enterprise search

Research assistants

Compatible models

OpenAIAnthropicOllama local modelsGemini

Why this matters for India

// india context

Build a Q&A bot over your company's documentation — fully private with local models.