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Updated June 15, 2026AG2 (formerly AutoGen) is an open-source multi-agent AI framework originally created by Microsoft Research and now maintained as an independent nonprofit project. It enables developers to build systems where multiple AI agents collaborate, debate, and coordinate to solve complex tasks.
The framework supports customizable agent roles, flexible conversation patterns, and human-in-the-loop workflows. AG2 agents can execute code, use tools, and interact with external services while maintaining structured multi-turn conversations. The project has become one of the most popular open-source agent frameworks, with a large community contributing extensions for RAG, code generation, and task planning.
AG2 is particularly well-suited for research and enterprise applications that require transparent, auditable agent interactions — a key differentiator from more opaque agent orchestration systems.
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Community-governed open-source multi-agent framework, originally created by Microsoft Research as AutoGen. Build systems where multiple AI agents collaborate, debate, and solve problems together.