LangChain vs Haystack by deepset
Side-by-side from the Top 11 rankings of The 11 Best RAG Frameworks (2026) and 11 Best AI Agent Builder Platforms 2026 — LangChain, CrewAI & 9 Rivals Ranked, No Paid Listings. 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 (2026) | #6 / 11 Best AI Agent Builder Platforms 2026 — LangChain, CrewAI & 9 Rivals Ranked, No Paid Listings |
| 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.