Originally published on rohitraj.tech
AutoGen is in maintenance mode — Microsoft folded it and Semantic Kernel into the new Microsoft Agent Framework, which hit 1.0 GA in 2026. So the old "LangGraph vs CrewAI vs AutoGen" advice is stale. This is the builder\'s read: the same agent written in all three frameworks, where each one actually wins, an honest comparison table, how to migrate an AutoGen AssistantAgent to a ChatAgent, when to skip the Microsoft stack entirely, and the setup I\'d ship to production.
Read the full version with code samples, diagrams, and architecture details: Microsoft Agent Framework vs LangGraph vs CrewAI: Which to Use Now That AutoGen Is Dead (2026)
More engineering notes: rohitraj.tech/en/notes
