LangChain vs DSPy
Side-by-side from the Top 11 ranking of LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026. Last verified May 31, 2026.
The short answer
LangChain ranks higher on Top 11 (#1 vs #4) for Developers shipping RAG pipelines into production. The most versatile framework with the largest ecosystem for building any type of LLM application, including advanced RAG.
At a glance
| LangChain | DSPy | |
|---|---|---|
| Top 11 rank | #1 / LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026 | #4 / LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026 |
| Score (out of 9.4) | 9.3 | 8.7 |
| Best for | Most versatile & integrated | Programmatic RAG optimization |
| Pricing | Free (Open Source) | Free (Open Source) |
| HQ | San Francisco, USA | Palo Alto, USA |
| Founded | 2022 | 2023 |
LangChain
The most versatile framework with the largest ecosystem for building any type of LLM application, including advanced RAG.
www.langchain.com/See full entry in LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026
DSPy
A novel framework that systematically optimizes prompts and model weights for peak RAG performance.
github.com/stanfordnlp/dspySee full entry in LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.