LlamaIndex vs LangChain
A side-by-side comparison to help you choose the right tool.
85
LlamaIndex scores higher overall (85/100)
But the best choice depends on your specific needs. Compare below.
| Feature | LlamaIndex | LangChain |
|---|---|---|
| Our score | 85 | 84 |
| Pricing | Open-source core project; no license fee for core framework use. | Open-source framework; no license fee for the core project. |
| Free plan | Yes | Yes |
| Best for | Teams building data-heavy AI assistants, Developers who need better structure around retrieval pipelines, Projects with lots of internal documents or knowledge bases | Developers prototyping or shipping LLM apps quickly, Teams that want a big ecosystem of examples and integrations, Builders creating RAG or tool-using workflows |
| Platforms | mac, windows, linux, api | mac, windows, linux, api |
| API | Yes | Yes |
| Languages | en | en |
| Pros |
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| Cons |
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| Visit site | Visit site |
- Pricing
- Open-source core project; no license fee for core framework use.
- Free plan
- Yes
- Best for
- Teams building data-heavy AI assistants, Developers who need better structure around retrieval pipelines, Projects with lots of internal documents or knowledge bases
- Platforms
- mac, windows, linux, api
- API
- Yes
- Languages
- en
- Pricing
- Open-source framework; no license fee for the core project.
- Free plan
- Yes
- Best for
- Developers prototyping or shipping LLM apps quickly, Teams that want a big ecosystem of examples and integrations, Builders creating RAG or tool-using workflows
- Platforms
- mac, windows, linux, api
- API
- Yes
- Languages
- en
85Choose LlamaIndex if:
- You are Teams building data-heavy AI assistants
- You are Developers who need better structure around retrieval pipelines
- You are Projects with lots of internal documents or knowledge bases
- You want to start free
84Choose LangChain if:
- You are Developers prototyping or shipping LLM apps quickly
- You are Teams that want a big ecosystem of examples and integrations
- You are Builders creating RAG or tool-using workflows
- You want to start free
FAQ
- What is the difference between LlamaIndex and LangChain?
- LlamaIndex is an open-source framework focused on connecting llms to structured and unstructured data through indexing, retrieval, and agent patterns. LangChain is a widely used open-source framework for building llm apps with tools, chains, retrieval, and agent workflows.
- Which is cheaper, LlamaIndex or LangChain?
- LlamaIndex: Open-source core project; no license fee for core framework use.. LangChain: Open-source framework; no license fee for the core project.. LlamaIndex has a free plan. LangChain has a free plan.
- Who is LlamaIndex best for?
- LlamaIndex is best for Teams building data-heavy AI assistants, Developers who need better structure around retrieval pipelines, Projects with lots of internal documents or knowledge bases.
- Who is LangChain best for?
- LangChain is best for Developers prototyping or shipping LLM apps quickly, Teams that want a big ecosystem of examples and integrations, Builders creating RAG or tool-using workflows.