How to Build Multi-Agent Systems with the OpenAI Agents SDK

Multi-agent systems can be built using two primary delegation patterns: agent-as-a-tool and handoff. In the agent-as-a-tool pattern, a main agent calls specialist agents to perform subtasks and then synthesizes the results to form a final answer. The handoff pattern involves an initial agent acting as a router, transferring control entirely to a specialist agent that handles the request. The OpenAI Agents SDK is used to demonstrate these concepts with Python code, building an EV purchase adviser with the first pattern and an EV support agent with the second. These two patterns serve as the fundamental building blocks for more complex multi-agent architectures.