Side-by-side comparison

LlamaIndex vs LangChain

A factual comparison generated from the two reviewed directory profiles. Follow the official links for current plan limits and product terms.

Signal	LlamaIndex	LangChain
Tagline	A framework and managed platform for document ingestion, retrieval, workflows, and knowledge agents.	Open-source frameworks and a platform for building, evaluating, deploying, and observing AI agents.
Category	Developer tools	Developer tools
Pricing	Freemium	Freemium
Platforms	Python, TypeScript, Web	Python, TypeScript, Web
Features	Document ingestion, indexing, and retrieval libraries Managed parsing and agent workflow services	Open-source agent frameworks with provider integrations Tracing, evaluation, deployment, and monitoring through LangSmith
Tags	API, Open source, Research	API, Coding, Open source
Community	0 votes · 0 saves	0 votes · 0 saves

Choose LlamaIndex when

A framework and managed platform for document ingestion, retrieval, workflows, and knowledge agents.

LlamaIndex supplies open-source libraries and managed services for connecting AI applications to documents and enterprise data. Its tools cover document parsing, indexing, retrieval, workflows, and agents that reason over private knowledge.

Read the LlamaIndex profile

Choose LangChain when

Open-source frameworks and a platform for building, evaluating, deploying, and observing AI agents.

LangChain provides open-source frameworks for building agents and LangSmith services for tracing, evaluation, deployment, and monitoring. Its ecosystem supports multiple model providers and SDKs for several programming languages.

Read the LangChain profile