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Full-Duplex Speech Models Take the Floor When Asked, Not When Needed

arXiv · AI, language, vision and robotics · article · Sep 17, 2026 · UTC

Full-duplex speech models listen and speak at once, promising always-on assistants. Yet they must also decide when they should speak. Human listeners speak when addressed or when the speaker stops, but also self-select to correct a false claim, supply a missing word, or warn of danger. We ask whether full-duplex models do the same. To separate the reason to speak from the opportunity, we construct context-matched English monologues in which only the trigger utterance varies within a topic, define 10 conditions from turn-allocation rules, and compress inter-word pauses to limit opportunities cr

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Evidence & attribution

First collected: 2026-09-19T20:28:21.856Z. This is not the publication date.