# ByteDance Launches Native Full-Duplex Voice Large Model Seeduplex

- Category: Flash (快讯)
- Published: 2026-04-09T11:56:00.000Z
- Source date: 2026-04-09
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ByteDance's Seed team has released Seeduplex, a full-duplex voice large model now fully deployed on the Doubao App. Using a 'listen-while-speaking' architecture, the model achieves simultaneous listening and speaking, significantly reducing error replies and interruptions while cutting stop-judgment latency. It improves conversation fluency and user satisfaction, marking the first large-scale implementation of full-duplex voice technology.

## At a glance

- Seeduplex uses a 'listen-while-speaking' framework, cutting error replies by 50% and latency by 250ms
- The model is fully live on Doubao App, marking the first large-scale deployment of full-duplex voice tech

## The update

ByteDance's Seed team has officially launched Seeduplex, a native full-duplex voice large model that is now fully available on the Doubao App. Built on an innovative 'listen-while-speaking' framework, Seeduplex enables true simultaneous listening and speaking interactions. In terms of performance, the model features precise anti-interference capabilities and dynamic stop-judgment mechanisms, reducing the error reply rate by 50% and the interruption rate by 40%, while cutting stop-judgment latency by 250 milliseconds. Evaluation data shows that the new model improves conversation fluency by 12% and increases user satisfaction by 8.34%. This advancement marks the first large-scale implementation of full-duplex voice technology in the industry, delivering a substantial upgrade to intelligent voice interaction experiences.

## Sources

- [字节跳动Seed](https://mp.weixin.qq.com/s/ymyF-nBO-VT7ehnGO255qg) (2026-04-09)

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