LlamaIndex vs Haystack by deepset
Side-by-side from the Top 11 rankings of The 11 Best RAG Frameworks and The 11 Best AI Agent Builders. Last verified May 31, 2026.
The short answer
LlamaIndex ranks higher on Top 11 (#2 vs #6) for Developers shipping RAG pipelines into production / Developers building autonomous AI agents and workflows. A data-centric framework excelling at advanced indexing and retrieval strategies for high-accuracy RAG.
At a glance
| LlamaIndex | Haystack by deepset | |
|---|---|---|
| Top 11 rank | #2 / The 11 Best RAG Frameworks | #6 / The 11 Best AI Agent Builders |
| Score (out of 9.4) | 9.2 | 8.2 |
| Best for | Best for data-centric RAG | Enterprise-grade RAG & search agents |
| Pricing | Free (Open Source) | Free (Open Source) + Enterprise Edition |
| HQ | San Francisco, USA | Berlin, Germany |
| Founded | 2022 | 2018 |
LlamaIndex
A data-centric framework excelling at advanced indexing and retrieval strategies for high-accuracy RAG.
www.llamaindex.ai/Haystack by deepset
A robust, pipeline-centric framework for building scalable enterprise RAG agents.
haystack.deepset.ai/Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.