AutoGen is an open-source programming framework from Microsoft Research for building AI agents and facilitating cooperation among multiple agents to solve complex tasks through multi-turn conversations. Pioneered conversable agents that interact, use tools, and involve humans in the loop for multi-agent workflows. v0.4 features a redesigned async event-driven architecture with stronger observability, flexible collaboration patterns, and reusable components.
Alternatives to AG2
3 editor-selected alternatives · AG2 overview →
source: tools.alternatives · stored order · active records only; review scores are annotations and never change membership or order
A directional evidence panel appears only when the substitute rationale, trade-offs, sources, and verification date have been recorded. Older selections without that panel remain visible but are unclassified under the new evidence contract.
Python framework for orchestrating autonomous AI agents that collaborate to accomplish complex tasks. Define agents with specific roles, goals, and backstories, then organize them into crews with sequential or parallel task execution. Supports tool usage (web search, file I/O, API calls), memory, delegation between agents, and human-in-the-loop input. Works with OpenAI, Anthropic, local models, and more. 25K+ GitHub stars. Leading multi-agent framework alongside LangGraph and AutoGen.
The most widely-used framework for building LLM-powered applications, available in Python and JavaScript. Provides abstractions for chains, agents, RAG, memory, tool usage, and structured output. Integrates with 100+ LLM providers, vector stores, document loaders, and tools. LangSmith offers tracing and evaluation. LangGraph enables stateful, multi-agent workflows with cycles. 100K+ GitHub stars. The de facto standard for LLM application development despite growing alternatives like LlamaIndex.
Open-source AG2 alternatives
AutoGen, CrewAI, LangChain — see all open-source developer tools.
Free AG2 alternatives
More Agent Frameworks tools
same category, not editor-selected alternatives — see how AG2 compares →
FAQ
Which AG2 alternative is listed first?
AutoGen is first in the editor-selected list of 3 AG2 alternatives and carries an editorial review score of 80/100. The stored order is editorial; review scores do not determine membership or position.
Are there open-source AG2 alternatives?
Yes — AutoGen, CrewAI, LangChain are open source.
Are there free AG2 alternatives?
Yes — CrewAI, LangChain offer a free plan or free tier.