IndexTTS: An Industrial-Level Controllable and Efficient Zero-Shot Text-To-Speech System

👉🏻 IndexTTS 👈🏻

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IndexTTS is a GPT-style text-to-speech (TTS) model mainly based on XTTS and Tortoise. It is capable of correcting the pronunciation of Chinese characters using pinyin and controlling pauses at any position through punctuation marks. We enhanced multiple modules of the system, including the improvement of speaker condition feature representation, and the integration of BigVGAN2 to optimize audio quality. Trained on tens of thousands of hours of data, our system achieves state-of-the-art performance, outperforming current popular TTS systems such as XTTS, CosyVoice2, Fish-Speech, and F5-TTS.
Experience IndexTTS: Please contact xuanwu@bilibili.com for more detailed information.

Acknowledge

1. tortoise-tts
2. XTTSv2
3. BigVGAN
4. wenet
5. icefall

📚 Citation

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@article{deng2025indextts,
  title={IndexTTS: An Industrial-Level Controllable and Efficient Zero-Shot Text-To-Speech System},
  author={Wei Deng, Siyi Zhou, Jingchen Shu, Jinchao Wang, Lu Wang},
  journal={arXiv preprint arXiv:2502.05512},
  year={2025}
}