A agentindex
Comparison

LlamaIndex vs Semantic Kernel

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

LlamaIndex

The data framework for LLM applications.

  • + Best-in-class data connectors and retrieval
  • + Workflows now support agentic flows
  • − Broad surface area is intimidating
  • − Agent story overlaps with LangGraph

Semantic Kernel

Microsoft's SDK for enterprise AI orchestration.

  • + Strong .NET and Java story for enterprise
  • + Planner abstraction for tool orchestration
  • − Enterprise-flavored, less hacker-friendly
  • − Concept-heavy docs
Spec LlamaIndex Semantic Kernel
Category framework framework
License MIT MIT
Open source Yes Yes
Self-hostable Yes Yes
MCP support Yes Yes
Pricing free free
Starting price BYOK usage cost BYOK usage cost
Models claude, gpt, gemini, local, byok gpt, claude, byok
Languages python, typescript csharp, python, java
GitHub stars 50.4k 28.2k
Last activity 2026-06-24 2026-06-25