6 Production-Proven Multi-Agent Orchestration Patterns

As multi-agent systems mature, six patterns have emerged as production-proven in 2026: sequential chains, parallel fan-out, supervisor/worker, hierarchical delegation, consensus/debate (multiple agents independently verify findings), and human-in-the-loop. The consensus/debate pattern is particularly valuable for agentic code reviews and security audits where independent verification catches more issues.

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Sources: AI Agent Orchestration Patterns · LangGraph / LangChain overview