Multi-Agent System — AI Glossary

A multi-agent system is a system in which two or more LLM-driven agents collaborate on a task, typically by exchanging messages, handing off ownership, or being orchestrated by a higher-level coordinator. Patterns include sequential pipelines, hierarchical supervisor-and-workers, peer-to-peer collaboration, and graph-routed flows. Frameworks like LangGraph, CrewAI, the OpenAI Agents SDK, and Mastra all provide multi-agent primitives.