The data framework for LLM apps. Ingest, index, and query your private data with RAG.
The data framework for LLM apps. Ingest, index, and query your private data with RAG. We tested it across real workflows to find where it shines and where it stumbles.
Who it's for: Developer Framework users who want a faster, AI-assisted workflow without a steep learning curve.
Load from Notion, Slack, PDFs, Postgres, S3, and more.
Vector, tree, keyword, and knowledge-graph indexes tuned for RAG.
Build chat, summarize, and sub-question routers with a few lines.
Multi-step reasoning over your data with function calling.
LlamaIndex earns a spot in a modern AI stack if you value developer framework speed and quality. Free is reasonable for what it delivers — and the free tier is enough to decide if it fits.