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LlamaIndex Fundamentals

Introduction to LlamaIndex

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What is LlamaIndex?

LlamaIndex: The Data Framework for LLM Applications

LlamaIndex (formerly GPT Index) is a data framework for building LLM applications. It excels at:

  • Data Ingestion: Connect to 100+ data sources
  • Data Indexing: Structure data for optimal retrieval
  • Query Interface: Natural language access to your data
  • RAG: Retrieval-Augmented Generation made simple

Why Use LlamaIndex?

ChallengeLlamaIndex Solution
LLMs have knowledge cutoffConnect to your own data
Context window limitsSmart retrieval of relevant chunks
HallucinationsGround responses in your data
Complex data pipelinesSimple, composable abstractions

Basic Example

python

Three lines to build a RAG system!