# When to Split a Single AI Agent into Multiple Agents

DevFeed: [When to Split a Single AI Agent into Multiple Agents](<https://devfeed.tech/articles/don-t-start-with-multi-agent-18114.md>)

Original publisher: [Read original article](<https://thetshaped.dev/p/multi-agent-is-the-new-microservices-one-agent-vs-many-agents-supervisor-pattern>)

Author: The T-Shaped Dev

Published: 2026-09-12T05:19:14Z

Content type: opinion

Language: en

Sources: [The T-Shaped Dev](<https://devfeed.tech/sources/the-t-shaped-dev.md>)

Topics: [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [Architecture & Design](<https://devfeed.tech/topics/architecture-design.md>), [Microservices](<https://devfeed.tech/topics/microservices.md>)

Tags: [agent](<https://devfeed.tech/tags/agent.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-agents](<https://devfeed.tech/tags/ai-agents.md>), [microservices](<https://devfeed.tech/tags/microservices.md>), [multi-agent](<https://devfeed.tech/tags/multi-agent.md>)

## AI overview

The article argues that multi-agent systems can be worthwhile when a single agent suffers from expanding tool choices, conflicting system instructions, and excessive blast radius. It recommends starting with one agent and using measurable signs to determine when to split into specialized agents managed by a supervisor.

## Source excerpt

When one agent should become many, when it shouldn't, and the supervisor pattern that makes the split work. (8 min)