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Instruction Duplication as an Inference-Time Control Primitive

arXiv · AI, language, vision and robotics · article · Sep 3, 2026 · UTC

Procedural instruction following is a basic requirement for controllable language-model systems, especially when generated trajectories are inspected or repaired downstream. We introduce instruction duplication, a minimal black-box inference-time control that repeats only the procedural instruction, without retraining or decoding changes. Across seven instruction-tuned models, 300 medical multiple-choice questions, eight placement conditions, and 16,800 scheduled generations, moving from one to two copies raises the deterministic All-8 diagnostic--responses passing all eight observable tests--

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Evidence & attribution

First collected: 2026-09-21T04:31:57.454Z. This is not the publication date.