Conversation-driven multi-agent framework from Microsoft Research.
AutoGen models agent collaboration as conversations: multiple agents talk to each other, debate, and reach consensus through dialogue, making it a natural fit for tasks where several perspectives must be weighed. It pioneered the conversable-agent pattern. The community-driven successor AG2 introduced an event-driven architecture and async message passing and is working toward a stable v1.0.
Open-source (code MIT, docs CC BY 4.0). Free to use; costs come from the underlying model API. The repository is archived and no longer maintained; Microsoft points users to Microsoft Agent Framework.
pricing model, pricing details · as of 2026-11-03