CrewAI vs AutoGen vs LangGraph: Which Multi-Agent Framework in 2026? Three frameworks dominate multi-agent development in 2026. They have fundamentally different design philosophies, and picking the wrong one costs you weeks. Here's the decision guide. The One-Sentence Summary CrewAI : Role-based teams. Define agents as crew members with jobs. Fast to build, great for pipelines. AutoGen / AG2 : Conversation-based. Agents talk to each other. Best for code generation and research. LangGraph : Graph-based state machines. Explicit control flow. Best for complex production systems. Side-by-Side Comparison CrewAI AutoGen/AG2 LangGraph Creator CrewAI Inc. Microsoft LangChain Inc.…