AutoGen

Microsoft's open-source framework for multi-agent AI applications in Python and .NET. Now in maintenance mode, with Microsoft Agent Framework as its official successor.

Visit Website 61.4k
Pricing Open Source
Category Agents & Orchestration
Python .NET Agents Multi-agent Microsoft

Founder's Verdict

"Don't start a new project on it. Existing AutoGen apps still run, but Microsoft says it gets no new features, and Microsoft Agent Framework is where new work belongs."

AutoGen

AutoGen is Microsoft’s open-source framework for building applications where several AI agents talk to each other and to people. It supports Python and .NET, ships a no-code GUI called AutoGen Studio, and is released under the MIT license (documentation under CC-BY-4.0).

Status: maintenance mode

AutoGen’s own README is clear about where the project stands (checked 15 Oct 2026):

  • It says AutoGen “is now in maintenance mode” and “will not receive new features or enhancements and is community managed going forward.”
  • It calls Microsoft Agent Framework “the enterprise-ready successor to AutoGen” and tells people starting a new project to head there.
  • Existing users are pointed to a migration guide.

What replaced it

Microsoft Agent Framework is an MIT-licensed, multi-language framework for production agents and multi-agent workflows. Per its README it offers graph-based workflows (sequential, concurrent, handoff and group patterns) with checkpointing, streaming, human-in-the-loop and time-travel, built-in OpenTelemetry observability, and declarative YAML agents. It targets Python and .NET and has migration guides for both AutoGen and Semantic Kernel.

Who should still care

  • Teams running AutoGen in production who need to plan a migration.
  • Anyone following older tutorials: a lot of “multi-agent” guides still use AutoGen’s API.

For a side-by-side look at the options, see CrewAI vs LangGraph vs AutoGen.

Compared with

CrewAI vs LangGraph vs AutoGen (2026): Which Agent Framework Should You Use? For new projects, pick between CrewAI and LangGraph. CrewAI is the fastest way to stand up a team of role-based agents; LangGraph is the better choice when you need low-level control, durable execution and human-in-the-loop. Skip AutoGen for anything new: Microsoft has put it in maintenance mode and points new work to Microsoft Agent Framework.

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