> For the complete documentation index, see [llms.txt](https://docs.myshell.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.myshell.ai/technology/openvoice.md).

# OpenVoice

<figure><img src="/files/LJhjqopUlYCEdGCA8USl" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/NlgRO03bOKA3soIbesz1" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="/files/QavWGARXZXUzCsgaYSd4" alt="" width="375"><figcaption></figcaption></figure>

[GitHub](https://github.com/myshell-ai/OpenVoice) / [Paper](https://arxiv.org/abs/2312.01479) / [Website](https://research.myshell.ai/open-voice)

OpenVoice has been powering the instant voice cloning capability of [myshell.ai](https://app.myshell.ai/explore) 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.

<figure><img src="/files/ncP9DJnCem1MU7eR7g6P" alt=""><figcaption><p><a href="https://research.myshell.ai/open-voice/zero-shot-cross-lingual-voice-cloning">https://research.myshell.ai/open-voice/zero-shot-cross-lingual-voice-cloning</a></p></figcaption></figure>

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## History

### OpenVoice V1

As we detailed in our [paper](https://arxiv.org/abs/2312.01479) and [website](https://research.myshell.ai/open-voice), 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.

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### 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.

## How to Use

Please see [usage](https://github.com/myshell-ai/OpenVoice/blob/main/docs/USAGE.md) for detailed instructions.

### Common Issues

Please see [QA](https://github.com/myshell-ai/OpenVoice/blob/main/docs/QA.md) 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.