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ZONOS3-Mini Technical Report

/ Paper arXiv 2611.16525

Key numbers

6.71%ZONOS3-Mini reaches a 6.71% macro-average WER over 55 language sets
886MTo achieve this we propose a latent MoE backbone with only 886M parameters

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5 / 100#153 of 1200 papers that day, from GitHub, Hugging Face, Hacker News and Semantic Scholar, looked up the morning it was ranked.

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Community attention0 / 30

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Author track record5 / 15

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Abstract

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ZONOS3-Mini is an ultra-compact, ultra-fast, zero-shot voice-cloning TTS model. The model can run in real time on a laptop or smartphone. For its latency and size, it achieves state-of-the-art accuracy and cloning fidelity. To achieve this we propose a latent MoE backbone with only 886M parameters (100M active per token) and a new audio codec, Zyphra Audio Codec 1 (ZAC-1), which represents 44.1 kHz audio at a 15 Hz frame rate. On the new ZTTS2-Eval benchmark, ZONOS3-Mini reaches a 6.71% macro-average WER over 55 language sets (35 clean and 20 in the wild), which is competitive with larger and slower state-of-the-art models. We release the model weights, inference, and training code.

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Code, models and demos that use this paper.

Models:
Zyphra/ZONOS3-Mini ↗2 models on Hugging Face
Demos:
hf-audio/open_tts_leaderboard ↗6 demos on Hugging Face

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