Your AI Agent Framework Has a Ceiling. Here Is the Architecture That Breaks It.
python
dev.to
Published on Dev.to by Rory | April 7, 2026 You have probably hit it already. You build a multi-agent system — LangGraph, AutoGen, CrewAI, a custom orchestrator — and it works beautifully at 3 agents. Then at 10. Then somewhere around 20-30 agents, something strange happens: latency spikes, the orchestrator becomes a bottleneck, coordination cost explodes, and the intelligence you were expecting from adding more agents just... doesn't arrive. This is not a bug in your framework. It is an a