LangChain
6.8#6 in llm application development frameworks$39 usage-basedFree planAPISelf-hosted
VisitLangChain vs LlamaIndex
LlamaIndex
7.1#4 in llm application development frameworksFrom $50 a monthFree planWebAPILinuxSelf-hosted
VisitWhat both publish
| Fact | LangChain | LlamaIndex |
|---|---|---|
| Integrations | LangChain documents 1000+ integrations across chat and embedding models, tools and toolkits, document loaders, and vector stores. | LlamaIndex documents community integrations for data loaders, agent tools, LLMs, vector stores, observability, and application frameworks. |
| Purpose | LangChain is an open-source framework that provides a pre-built agent architecture and integrations for models and tools. | LlamaIndex helps developers and enterprises automate document processing and build AI workflows around documents. |
| Support | The LangSmith Developer plan includes community support, while the Enterprise plan includes a support SLA. | The listed support levels are community for Free, basic email support for Starter, priority Slack Connect for Pro, and dedicated support for Enterprise. |
LangChain plans
- Developer (LangSmith)Free
- LangChain frameworkFree
- Plus (LangSmith)$39 a month
- Enterprise (LangSmith)Priced on request
LlamaIndex plans
- Starter$50 a month
- Pro$500 a month
- EnterprisePriced on request
- Free—
Pick LangChain if…
LangChain suits developers building agents with models and tools, especially those who want to choose from documented integrations or switch model providers. Its Python and JavaScript/TypeScript examples support developers working in either language.
Pick LlamaIndex if…
LlamaIndex is for developers and enterprises automating document workflows and knowledge work. Its parsing, extraction, classification, and RAG indexing capabilities suit teams building AI applications around document content.