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Agents2026-08-14 · source-backed
arXiv 2608.12921 uses causal inference to find which edges in a communication graph actually carry signal, then removes the rest. Most multi-agent stacks default to broadcast or a fully-connected mesh and pay for every edge in tokens, so edge-level attribution is a direct cost lever most people haven't touched.
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Both cover Most; reported by the same outlet (arxiv.org); earlier Most coverage from 2026-07-29.