LlamaIndex
LlamaIndex
FreeSemantic Kernel
Microsoft
FreeLlamaIndex vs Semantic Kernel: Full Comparison (2026)
LlamaIndex is data framework for building llm applications over your data. Semantic Kernel is microsoft's open-source sdk for ai orchestration. Use the breakdown below to find the right fit for your needs.
This page presents factual information sourced from publicly available vendor documentation and product pages. AIHub does not endorse either product. The right tool depends on your specific use case, team, and requirements — we recommend evaluating both tools directly before making a decision.
Side-by-Side Overview
Pricing Model
LlamaIndex
FreeSemantic Kernel
FreeAPI Access
LlamaIndex
Not availableSemantic Kernel
Not availablePlatforms
LlamaIndex
WebSemantic Kernel
WebIntegrations
LlamaIndex
—Semantic Kernel
—Vendor
LlamaIndex
LlamaIndexSemantic Kernel
MicrosoftCategory
LlamaIndex
FrameworksSemantic Kernel
FrameworksLaunch
LlamaIndex
—Semantic Kernel
—| Feature | LlamaIndex | Semantic Kernel |
|---|---|---|
| Pricing Model | Free | Free |
| API Access | Not available | Not available |
| Platforms | Web | Web |
| Integrations | — | — |
| Vendor | LlamaIndex | Microsoft |
| Category | Frameworks | Frameworks |
| Launch | — | — |
About LlamaIndex
LlamaIndex (formerly GPT Index) simplifies connecting custom data sources to LLMs. Provides data connectors, indexing strategies, and query engines for building RAG applications.
Designed For
- RAG over documents
- Structured data querying
- Multi-agent systems
- Knowledge bases
About Semantic Kernel
Semantic Kernel is Microsoft's open-source SDK for integrating LLMs into .NET, Python, and Java applications. Designed for enterprise AI orchestration with plugins, planners, and memory components for building complex AI agents.
Designed For
- Enterprise AI integration
- AI agents
- Plugin development
- Copilot extensions
Strengths & Limitations
LlamaIndex
Strengths
- Data-focused
- Easy RAG setup
- Many connectors
Limitations
- Less agent-focused than LangChain
- Learning curve
Semantic Kernel
Strengths
- Multi-language (.NET/Python/Java)
- Microsoft support
- Enterprise-focused
Limitations
- Microsoft ecosystem bias
- Complex for simple use cases
Frequently Asked Questions
What is the difference between LlamaIndex and Semantic Kernel?
LlamaIndex is data framework for building llm applications over your data, while Semantic Kernel is microsoft's open-source sdk for ai orchestration. LlamaIndex is designed for Frameworks; Semantic Kernel is designed for Frameworks. The right fit depends on your specific requirements.
How do the pricing models compare?
LlamaIndex is available under a Free model. Semantic Kernel is available under a Free model. Always verify pricing on each vendor's official website as it may change.
How do I choose between LlamaIndex and Semantic Kernel?
Consider your team's technical requirements, budget, existing tooling, and use case before deciding. We recommend signing up for free trials or demos of both tools where available, and consulting each vendor's documentation. AIHub provides this comparison for informational purposes only.
Feature Snapshot
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LlamaIndex full detailsSemantic Kernel full detailsLlamaIndex official siteSemantic Kernel official siteRelated Comparisons
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Data sourced from public vendor documentation. Pricing, features, and availability may change. Always verify on official vendor websites before making purchasing decisions. AIHub is not affiliated with any of the listed vendors.