DSPy vs Microsoft Semantic Kernel

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

DSPy ranks higher on Top 11 (#4 vs #5) for Developers shipping RAG pipelines into production. A novel framework that systematically optimizes prompts and model weights for peak RAG performance.

At a glance

DSPyMicrosoft Semantic Kernel
Top 11 rank#4 / LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026#5 / LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026
Score (out of 9.4)8.78.5
Best forProgrammatic RAG optimizationMicrosoft ecosystem integration
PricingFree (Open Source)Free (Open Source)
HQPalo Alto, USARedmond, USA
Founded20232023

DSPy

A novel framework that systematically optimizes prompts and model weights for peak RAG performance.

github.com/stanfordnlp/dspy

See full entry in LangChain vs LlamaIndex vs Haystack: 11 Best RAG Frameworks 2026

Microsoft Semantic Kernel

The go-to framework for developers in the Microsoft ecosystem, offering strong .NET/C# and Azure integration.

learn.microsoft.com/en-us/semantic-kernel/

See 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.