Microsoft Agent Framework
Unify Microsoft's two prior agent stacks — AutoGen's multi-agent orchestration and Semantic Kernel's enterprise plugin and connector model — into one SDK for building single- and multi-agent systems over shared abstractions for agents, tools, threads, and workflows.
Description
Microsoft Agent Framework is an open-source SDK announced in October 2025 that merges AutoGen and Semantic Kernel into a single agent stack for .NET and Python. It provides a unified agent abstraction with tool calling, multiple multi-agent orchestration shapes (sequential, concurrent, group chat, handoff), and a graph-based workflow runtime, alongside enterprise concerns — observability, approvals, and connectors — inherited from Semantic Kernel. Microsoft positions it as the successor to both predecessors, with general availability targeted for early 2026.
Solution
A unified agent abstraction over a tool-calling loop, with pluggable multi-agent orchestrators (sequential, concurrent, group chat, handoff) and a separate graph-based workflow runtime for deterministic control flow.
Primary use cases
- enterprise multi-agent applications
- .NET agent development
- tool-using assistants
- workflow orchestration
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