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AutoGen vs Semantic Kernel(2026)

AutoGen is better for teams that need best for multi-agent scenarios. Semantic Kernel is the stronger choice if best .net support. AutoGen is open-source (from $0) and Semantic Kernel is open-source (from $0).

Full feature breakdown, pricing details, and pros & cons below.

By Bikram Nath

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AutoGen logo

AutoGen

open-source

AutoGen is Microsoft's open-source framework for building multi-agent LLM applications where agents converse with each other, use tools, and collaborate to complete complex tasks.

Starting at $0

Visit AutoGen
Semantic Kernel logo

Semantic Kernel

open-source

Semantic Kernel is Microsoft's open-source AI SDK that enables developers to integrate LLMs into .NET, Python, and Java applications with plugins, memory, and multi-agent orchestration.

Starting at $0

Visit Semantic Kernel

How Do AutoGen and Semantic Kernel Compare on Features?

FeatureAutoGenSemantic Kernel
Pricing modelopen-sourceopen-source
Starting price$0$0
Multi-agent conversations✓—
Human-in-the-loop✓—
Code execution✓—
Tool use✓—
GroupChat orchestration✓—
Async support✓—
Studio UI✓—
Plugin architecture—✓
Memory management—✓
Multi-agent orchestration—✓
.NET/Python/Java—✓
Azure OpenAI integration—✓
Process framework—✓
Planners—✓

AutoGen Pros and Cons vs Semantic Kernel

A

AutoGen

+Best for multi-agent scenarios
+Microsoft backing
+Active research community
+Flexible agent roles
−Complex to debug
−High token usage with many agents
−Not ideal for simple pipelines
S

Semantic Kernel

+Best .NET support
+Enterprise-grade (Microsoft)
+Strong Azure integration
+Multi-language
−.NET bias despite multi-language
−Steeper learning curve
−More opinionated than LangChain

Should You Use AutoGen or Semantic Kernel?

For most teams, AutoGen is the better default: it offers best for multi-agent scenarios and is open-source (from $0). Choose Semantic Kernel instead if best .net support matters more than complex to debug. There is no universal winner — the right pick depends on your budget, team size, and whether you value best for multi-agent scenarios or best .net support more.

Choose AutoGen if…

  • •Best for multi-agent scenarios
  • •Microsoft backing
  • •Active research community

Choose Semantic Kernel if…

  • •Best .NET support
  • •Enterprise-grade (Microsoft)
  • •Strong Azure integration

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