LangChain, LangGraph, crewAI—when to use which.
LangChain, LangGraph, crewAI—when to use which.
Frameworks handle the agent loop (prompt → tool choice → execution → repeat), tool definitions, and often memory and orchestration. They speed up building and reduce boilerplate.
LangChain: chains, tools, and integrations for LLM apps. LangGraph: adds state and cycles (graphs) for multi-step and agentic workflows. Good for custom agents and control flow.
crewAI: multi-agent with roles and tasks. AutoGen, MetaGPT: multi-agent collaboration. Choose by need: single-agent vs multi-agent, level of control, and ecosystem (e.g. Python, cloud).
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