Side-by-side comparison of LangChain and LlamaIndex with detailed analysis, pricing, and features
LLM application framework
Open-source framework for building LLM-powered applications with chains, agents, RAG, and tool integrations.
Data framework for LLMs
Open-source data framework for connecting custom data sources to large language models for RAG and agents.
LangChain for complex agent chains. LlamaIndex for RAG and data retrieval.
Best for: complex AI agents, multi-step chains, diverse integrations
Best for: RAG applications, document Q&A, knowledge base search