myshell-ai

    myshell-ai/OpenVoice

    #37 this week

    Instant voice cloning by MIT and MyShell. Audio foundation model.

    backend
    text-to-speech
    tts
    voice-clone
    zero-shot-tts
    Python
    MIT
    36.4K stars
    4.1K forks
    36.4K GitHub watchers
    Updated 6/23/2026
    View on GitHub

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    Use Cases & Benefits

    • Enables instant voice cloning with accurate tone color and flexible style control across multiple languages and accents.
    • Offers zero-shot cross-lingual voice cloning with native multi-lingual support and free commercial use under the MIT license.
    • Use for creating personalized text-to-speech voices in multilingual applications without requiring training data in target languages.
    • Use for adding emotional and stylistic voice variations such as rhythm and intonation in speech synthesis projects.
    • Use for developing commercial voice cloning products that require high-quality, versatile audio generation with open-source licensing.

    About OpenVoice

     

    Paper | Website

    myshell-ai%2FOpenVoice | Trendshift

    Introduction

    OpenVoice V1

    As we detailed in our paper and website, the advantages of OpenVoice are three-fold:

    1. Accurate Tone Color Cloning. OpenVoice can accurately clone the reference tone color and generate speech in multiple languages and accents.

    2. Flexible Voice Style Control. OpenVoice enables granular control over voice styles, such as emotion and accent, as well as other style parameters including rhythm, pauses, and intonation.

    3. Zero-shot Cross-lingual Voice Cloning. Neither of the language of the generated speech nor the language of the reference speech needs to be presented in the massive-speaker multi-lingual training dataset.

    OpenVoice V2

    In April 2024, we released OpenVoice V2, which includes all features in V1 and has:

    1. Better Audio Quality. OpenVoice V2 adopts a different training strategy that delivers better audio quality.

    2. Native Multi-lingual Support. English, Spanish, French, Chinese, Japanese and Korean are natively supported in OpenVoice V2.

    3. Free Commercial Use. Starting from April 2024, both V2 and V1 are released under MIT License. Free for commercial use.

    Video

    OpenVoice has been powering the instant voice cloning capability of myshell.ai since May 2023. Until Nov 2023, the voice cloning model has been used tens of millions of times by users worldwide, and witnessed the explosive user growth on the platform.

    Main Contributors

    How to Use

    Please see usage for detailed instructions.

    Common Issues

    Please see QA for common questions and answers. We will regularly update the question and answer list.

    Citation

    @article{qin2023openvoice,
      title={OpenVoice: Versatile Instant Voice Cloning},
      author={Qin, Zengyi and Zhao, Wenliang and Yu, Xumin and Sun, Xin},
      journal={arXiv preprint arXiv:2312.01479},
      year={2023}
    }
    

    License

    OpenVoice V1 and V2 are MIT Licensed. Free for both commercial and research use.

    Acknowledgements

    This implementation is based on several excellent projects, TTS, VITS, and VITS2. Thanks for their awesome work!

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