A complete, hands-on architectural guide to the top 12 AI and agent frameworks — from LangGraph and Vercel AI SDK to Mastra, ModelFusion, Pydantic AI, MCP, AutoGen, and Haystack 2.0.
AI Agent & LLM Frameworks MasterclassLangGraph Deep Dive: Stateful Graph Orchestration for Autonomous Agents
CrewAI Framework Guide: Role-Playing Autonomous Multi-Agent Teams
Microsoft AutoGen 0.4+ Architecture Guide: Event-Driven Multi-Agent Systems
LangChain v0.3+ Architectural Guide: LCEL Runnables, Tools, and Retrieval