Toward an Organizational Science of Multi-Agent LLM Systems: Decoupling Who, How, and Which Algorithm

• URL: http://arxiv.org/abs/2607.25446v1
• Date: Tue, 28 Jul 2026 08:35:21 GMT
• Title: Toward an Organizational Science of Multi-Agent LLM Systems: Decoupling Who, How, and Which Algorithm
• Abstract summary: IMACS separates the three logically distinct concerns: who is on the team, how members align, and which algorithm fuses their work.<n>We use this separation to conduct controlled comparisons in which organizational assignments vary while the collaboration protocol is held fixed.<n>It also turns protocol choice into a variable that can be learned.
• Score: 14.162774819793759
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multi-agent frameworks built on large language models (LLMs) routinely entangle three logically distinct concerns: who is on the team (organization), how members align (coordination), and which algorithm fuses their work (collaboration protocol). IMACS (Intelligent Multi-Agent Collaboration System) separates the three into orthogonal, independently swappable layers. Classic organizational theory (Belbin roles, Mintzberg coordination, RACI accountability) becomes executable, validated configuration, and the framework places six published collaboration algorithms behind a common interface while exposing roles, coordination, and accountability as independently configurable factors. We use this separation to conduct controlled comparisons in which organizational assignments vary while the collaboration protocol is held fixed. It also turns protocol choice into a variable that can be learned: Adaptive Org Routing, a contextual-bandit meta-protocol, selects a protocol per task under an explicit quality-cost tradeoff, outperforms every fixed protocol in a controlled study, and trains online on real benchmark and LLM-judge rewards. The ablations expose a mechanism. Accountability placement changes outcomes exactly when the protocol routes the deliverable through the accountable agent, and the winning placement flips across model families, so organizational design cannot be hard-coded; it must be revalidated, or learned, for each model binding.

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