Resource / Developer Tools

LlamaIndex

An LLM application framework for RAG, data connectors and agents.

Free and open source

The open-source core is self-hostable; model, vector store and managed service costs are billed separately.

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Strong Candidate · Maintenance risk 4/5

Last verified: 2026-08-28. A free tier is not a permanent commitment; re-check the official conditions before use.