DuplexAct: How Interactive Are Frontier Full-Duplex Spoken Language Models?

Title:DuplexAct: How Interactive Are Frontier Full-Duplex Spoken Language Models?

Abstract:End-to-end (E2E) full-duplex spoken language models (FD-SLMs) enable simutanous listening and speaking continously, requiring models to take appropriate interaction actions as conversations unfold. However, existing benchmarks lack a structured action-level formulation, often evaluate action occurrence rather than success, and provide limited coverage of diverse real-world conversations. We introduce DuplexAct, a benchmark for evaluating interaction action taking in E2E FD-SLMs. DuplexAct defines a three-level action taxonomy spanning eight interaction actions and 24 corresponding interaction conditions. We further characterize successful action-taking through immediate execution and subsequent follow-through, and develop action-specific evaluation metrics for both. DuplexAct contains 4,691 test instances spanning casual conversation, meetings, customer service, and interviews, including 2,531 instances derived from real-world conversational recordings. Together, DuplexAct provides a structured and real-world-grounded framework for systematically assessing how E2E FD-SLMs participate in ongoing spoken interaction.

Artificial Intelligence (cs.AI)

arXiv:2610.17738 [cs.AI]

(or arXiv:2610.17738v1 [cs.AI] for this version)

https://doi.org/10.48550/arXiv.2610.17738 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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