AI Frameworks

LangChain vs LlamaIndex

Comparing two popular frameworks for building LLM-powered applications, from RAG pipelines to autonomous agents.

Feature

LangChain

LlamaIndex

RAG support

Agent framework

Data connectors

Structured output

Streaming support

TypeScript SDK

Python SDK

Multi-model support

Production monitoring

Low-code interface

Verdict

LangChain is better for complex agent workflows and tool integration. LlamaIndex shines for data-heavy RAG applications and document indexing.