LangChain 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
LangChain ranks higher on Top 11 (#1 vs #6) for Developers shipping RAG pipelines into production / Developers building autonomous AI agents and workflows. The most versatile framework with the largest ecosystem for building any type of LLM application, including advanced RAG.
At a glance
| LangChain | Haystack by deepset | |
|---|---|---|
| Top 11 rank | #1 / The 11 Best RAG Frameworks | #6 / The 11 Best AI Agent Builders |
| Score (out of 9.4) | 9.3 | 8.2 |
| Best for | Most versatile & integrated | Enterprise-grade RAG & search agents |
| Pricing | Free (Open Source) | Free (Open Source) + Enterprise Edition |
| HQ | San Francisco, USA | Berlin, Germany |
| Founded | 2022 | 2018 |
LangChain
The most versatile framework with the largest ecosystem for building any type of LLM application, including advanced RAG.
www.langchain.com/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.