orchestrator
Open source
free
4.2/5

LlamaIndex

Python/JS framework focused on RAG and document indexing. Cleaner than LangChain for retrieval-heavy use cases.

By Fredoline Eruo·Last verified May 6, 2026·38,000 GitHub stars

Overview

Python/JS framework focused on RAG and document indexing. Cleaner than LangChain for retrieval-heavy use cases.

Pros

  • RAG-first design
  • Great for production RAG

Cons

  • Smaller ecosystem than LangChain

Compatibility

Operating systems
any
GPU backends
any
LicenseOpen source · free

Get LlamaIndex

Frequently asked

Is LlamaIndex free?

Yes — LlamaIndex is free to download and use and open-source under a permissive license.

What operating systems does LlamaIndex support?

LlamaIndex supports any.

Which GPUs work with LlamaIndex?

LlamaIndex supports any. CPU-only inference is also possible but slow.

Reviewed by RunLocalAI Editorial. See our editorial policy for how we evaluate tools.