Model reference · open weights

SoulX-Singer

Available as managed deployment Audio Soul-AILab · community Text→speech 1 variants 1k dl/mo

SoulX-Singer is an open-weight audio or speech model from Soul-AILab. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.

Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.

What it is

MakerSoul-AILab
TypeAudio & music
TaskText→speech
Runs withhuggingface_hub
Released2026-02-06
Popularity1k downloads / month
LicenceOpen weights

About

What SoulX-Singer is

SoulX-Singer is a high-fidelity, zero-shot singing voice synthesis model that enables users to generate realistic singing voices for unseen singers. It supports melody-conditioned (F0 contour) and score-conditioned (MIDI notes) control for precise pitch, rhythm, and expression.

For more details, please refer to the paper: SoulX-Singer: Towards High-Quality Zero-Shot Singing Voice Synthesis.

Sample Usage

1. Set Up Environment

git clone https://github.com/Soul-AILab/SoulX-Singer.git
cd SoulX-Singer
conda create -n soulxsinger -y python=3.10
conda activate soulxsinger
pip install -r requirements.txt

2. Download Pretrained Models

pip install -U huggingface_hub

# Download the SoulX-Singer SVS model
hf download Soul-AILab/SoulX-Singer --local-dir pretrained_models/SoulX-Singer

# Download models required for preprocessing
hf download Soul-AILab/SoulX-Singer-Preprocess --local-dir pretrained_models/SoulX-Singer-Preprocess

3. Run Inference

bash example/infer.sh

License

We use the Apache 2.0 license. Researchers and developers are free to use the codes and model weights of our SoulX-Singer. Check the license at LICENSE for more details.

Usage Disclaimer

This project provides a singing voice synthesis model for vocal generation capable of zero-shot voice cloning, intended for academic research, educational purposes, and legitimate applications, such as personalized vocal synthesis and assistive technologies.

Please note: We advocate for the responsible development and use of AI and encourage the community to uphold safety and ethical principles in AI research and applications. If you have any concerns regarding ethics or misuse, please contact us.

Citation

@misc{soulxsinger,
      title={SoulX-Singer: Towards High-Quality Zero-Shot Singing Voice Synthesis},
      author={Jiale Qian and Hao Meng and Tian Zheng and Pengcheng Zhu and Haopeng Lin and Yuhang Dai and Hanke Xie and Wenxiao Cao and Ruixuan Shang and Jun Wu and Hongmei Liu and Hanlin Wen and Jian Zhao and Zhonglin Jiang and Yong Chen and Shunshun Yin and Ming Tao and Jianguo Wei and Lei Xie and Xinsheng Wang},
      year={2026},
      eprint={2602.07803},
      archivePrefix={arXiv},
      primaryClass={eess.AS},
      url={https://arxiv.org/abs/2602.07803},
}

Contact Us

If you are interested in leaving a message to our work, feel free to email qianjiale@soulapp.cn or menghao@soulapp.cn or wangxinsheng@soulapp.cn

You’re welcome to join our WeChat or Soul APP group for technical discussions, updates.

From the published model card. Full card on the HuggingFace links in the sidebar.

How it works

How audio & music work

Audio or textinputAudio modelrecognise / synthesiseText or audiooutputSpeech-to-text turns audio into text; text-to-speech and music models turn text into audio.

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys soulx-singer for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (soulx-singer below is illustrative; you get the exact model name on deployment.)

$ curl -sS https://api.axforge.ai/v1/audio/transcriptions \
  -H "Authorization: Bearer $AXFORGE_API_KEY" \
  -F model="soulx-singer" -F file=@audio.mp3

Create an account — your API key is available in the console. 5M tokens/month currently included with every new account at launch.

© 2026 AxForge · EU-hosted AI infrastructure Pricing Docs Trust Privacy Terms