Multi-Agent AI with CrewAI — When 3 Agents Beat One

Everyone's talking about AI agents. Most of the time, one agent with good tools is enough. But sometimes you genuinely need multiple agents with different specializations working together.

I built a demand forecasting system where three agents collaborate — a forecaster, a risk analyst, and a narrative generator. Here's what I learned about when multi-agent architectures are worth the complexity.

The Forecast Agent Architecture

The system predicts inventory demand for retail businesses. A single LLM call can't do this well because forecasting requires three fundamentally different skills: