AG2 (formerly AutoGen): Open-Source AgentOS for AI Agents

AG2, distributed via the 'autogen' PyPI package, is an open-source programming framework for building AI agents and facilitating cooperation among multiple agents to solve tasks. It aims to streamline the development and research of agentic AI, offering features such as multi-agent conversations, support for various large language models (LLMs) and tool use, autonomous and human-in-the-loop workflows. The library is actively maintained with frequent minor releases, currently at version 0.11.5, and is on a roadmap towards a major v1.0 release.