Back to all tools
Open Source
Tool Comparison
LlamaIndex
The data framework for LLM apps — RAG, agents, and enterprise data connectors.
VS
At a Glance
| Attribute | LlamaIndex | Semantic Kernel |
|---|---|---|
| License / Pricing | Open Source | Open Source |
| Type | ai | ai |
| GitHub Stars | — | — |
| Rating | 4.5/5 | 4.2/5 |
| Key Features | 6 listed | 6 listed |
| Integrations | 6 listed | 5 listed |
| Categories | AI AgentsRAG Frameworks | AI Agents |
Key Features
LlamaIndex
- 150+ data connectors (Notion, Slack, databases, S3, etc.)
- Advanced RAG with query routing and re-ranking
- Agentic workflows with multi-step reasoning
- Structured output and data extraction from documents
- Workflow engine for complex, event-driven agent pipelines
- LlamaCloud for managed RAG pipelines
Semantic Kernel
- Plugins — wrap functions as AI-callable tools
- Planner for autonomous goal decomposition
- Memory store with vector DB integrations
- Multi-LLM support: Azure OpenAI, OpenAI, Mistral, Ollama
- Available in Python, C#, and Java
- Native integration with Microsoft 365 and Azure
Real-World Use Cases
LlamaIndex
Enterprise knowledge base over internal docs
Connect data sources with SimpleDirectoryReader or Notion/Confluence loaders
Semantic Kernel
Add AI to a .NET enterprise application
Add the Microsoft.SemanticKernel NuGet package
Integrations
LlamaIndex
openaianthropicpineconeweaviatechromalangsmith
Semantic Kernel
openaianthropicazure-devopslangchainpinecone
🏆 Which should you choose?
Choose LlamaIndex if…
- → you're already in the AI Agents ecosystem and prefer LlamaIndex's workflow
Choose Semantic Kernel if…
- → you're already in the AI Agents ecosystem and prefer Semantic Kernel's workflow