AI Agent Frameworks Compared in 2027: LangChain vs LlamaIndex vs AutoGen vs CrewAI vs Smolagents vs Mastra
Six AI agent frameworks compared in 2027 — LangChain, LlamaIndex, AutoGen, CrewAI, Smolagents, and Mastra. Production readiness, learning curve, performance, and where each one wins or stalls, based on our own shipped LLM features.