Single Agent vs Multi-Agent: When to Build a Multi-Agent System

# When Should You Use Multiple AI Agents Instead of One? If you're building an AI system to handle complex tasks, you'll eventually face a choice: use a single powerful agent or split the work across multiple specialized agents. This guide explains the practical tradeoffs—like when one agent gets overwhelmed versus when multiple agents working together actually save you time and money, plus how to design workflows that let agents think through problems step-by-step instead of jumping straight to answers.