Updated April 2026

Best Multi-Agent Framework for .NET

For .NET stacks, Microsoft Semantic Kernel is effectively the only production-grade choice — it is the reference implementation, with first-class C# APIs, OpenTelemetry tracing, and tight Azure AI integration. AutoGen has a community .NET port but lags upstream. If you have a .NET-only constraint, Semantic Kernel is the default.

Constraint: .NET stacks narrow to Microsoft Semantic Kernel.

Top picks for .NET

  1. #1
    Microsoft Semantic Kernel

    ×1.2 overhead

Starter scaffolds

Buzzi ships .NET-compatible starter scaffolds for the top picks above. Run the wizard to download a 2-agent hello-world ZIP customised to your task pattern.

Run the selector

FAQ

  1. Which multi-agent framework is best for .NET?

    .NET stacks narrow to Microsoft Semantic Kernel. The wizard ranks every viable option for your specific workload.

  2. Can I switch frameworks after starting in .NET?

    Yes, but the cost is real — most agent code couples to its framework's primitives. Pick once, deliberately.

  3. Does .NET performance differ across frameworks?

    Marginally. Token costs dominate runtime; framework-level overhead is a small fraction of total cost in most workloads.

  4. Are the recommendations for .NET the same as Python?

    No — language-specific constraints can rule frameworks out entirely. See the constraints note above.