Fun with Large Models

Dec 26, 2025 · Artificial Intelligence

LangGraph Agent Design Patterns Part 1: Prompt‑Chain, Router, and Parallel Modes

This article introduces three core LangGraph workflow patterns—Prompt‑Chain, Router, and Parallel—explaining their concepts, advantages, and concrete Python code examples that demonstrate how to decompose tasks, route requests, and run sub‑tasks concurrently for more reliable and efficient AI agents.