Coder Trainee

Oct 17, 2026 · Artificial Intelligence

LangChain & LangGraph Deep Dive: Rewriting Hand-Rolled Agents for Production

This tutorial maps hand-rolled AI agent components to LangChain and LangGraph abstractions, demonstrates rewriting ReAct agents with tool decorators and state graphs, compares framework trade-offs against custom code, and provides criteria for choosing between single-agent workflows, multi-agent patterns, and manual implementations.