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Rethinking Multi-Agent Collaboration: When More Is Less

arXiv · Artificial Intelligence · article · Sep 17, 2026 · UTC

The rapid advancement of large language models and single-agent harnesses has reshaped the landscape of autonomous systems, raising a critical question of when multi-agent collaboration offers genuine value. As individual agent capabilities continue to scale, multi-agent collaboration faces diminishing returns while incurring growing context overhead. Through systematic analysis, we delineate the capability boundaries of multi-agent collaboration relative to single-agent alternatives, showing that it confers systematic benefits specifically in long-horizon tasks with sparse dependencies, while

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Evidence & attribution

First collected: 2026-09-19T20:26:32.566Z. This is not the publication date.