LlamaIndex
Definition
A data framework for connecting custom data sources to large language models, specializing in indexing and retrieval for RAG applications.In-Depth Explanation
LlamaIndex (formerly GPT Index) focuses on the data side of LLM applications. It provides tools to ingest, structure, and query data from various sources including documents, databases, and APIs. While LangChain is more general-purpose, LlamaIndex excels at RAG use cases with sophisticated indexing strategies and query engines.
Real-World Example
Using LlamaIndex to build a knowledge base from company wikis, Slack messages, and PDFs that employees can query naturally.