---
license: apache-2.0
pipeline_tag: text-to-speech
library_name: ZONOS2
tags:
- zonos2
- text-to-speech
- voice-clone
- clone
- voice
- tts
- comfyui
- bf16
---

# ZONOS2-BF16

This repository provides a **BF16 Safetensors conversion** of the original [Zyphra/ZONOS2](https://huggingface.co/Zyphra/ZONOS2) model for use with the [ZONOS2 TTS ComfyUI custom node](https://github.com/Saganaki22/Zonos2_TTS-ComfyUI).

The model was converted from the original PyTorch checkpoint format to `.safetensors` for easier loading, safer serialization, and direct integration with ComfyUI workflows.

![Screenshot 2026-06-12 214924](https://cdn-uploads.huggingface.co/production/uploads/63473b59e5c0717e6737b872/aWr3cHXPHERGSyYG2hvMT.png)

## Original Project

ZONOS2 is a text-to-speech model from Zyphra trained on more than 6 million hours of varied multilingual speech. It supports expressive speech generation and high-fidelity voice cloning.


![zonos2](https://cdn-uploads.huggingface.co/production/uploads/63473b59e5c0717e6737b872/Aiw3SXr27w4SVT4g-QSOt.gif)


## ComfyUI Custom Node

This model package is intended for use with:

- https://github.com/Saganaki22/Zonos2_TTS-ComfyUI

The ComfyUI node provides native ZONOS2 text-to-speech, audio-only voice cloning, BF16/FP16 loading, SDPA/FlashAttention inference, progress reporting, and ComfyUI/AIMDO model-management integration.

## Model File

Main model file:

- `zonos2-bf16.safetensors`

Direct download:

- https://huggingface.co/drbaph/ZONOS2-BF16/resolve/main/zonos2-bf16.safetensors?download=true

## Model Storage Location

Place the model and required assets under:

    ComfyUI/
    └── models/
        └── zonos2/
            ├── zonos2-bf16.safetensors
            ├── dac_44khz/
            └── speaker_encoder/

Expected layout:

    ComfyUI/models/zonos2/
    ├── zonos2-bf16.safetensors
    ├── dac_44khz/
    │   ├── config.json
    │   ├── dac_model.bin
    │   └── preprocessor_config.json
    └── speaker_encoder/
        ├── config.json
        ├── model.safetensors
        └── preprocessor_config.json

If `download_if_missing` is enabled in the ComfyUI node, missing assets can be downloaded automatically.

## Usage

Install the ComfyUI custom node:

    cd ComfyUI/custom_nodes
    git clone https://github.com/Saganaki22/Zonos2_TTS-ComfyUI.git

Then restart ComfyUI and load the ZONOS2 model from the node loader.

## Notes

- This repository is a converted BF16 Safetensors package of the original ZONOS2 model.
- The model architecture and original weights come from Zyphra/ZONOS2.
- This package is provided for ComfyUI compatibility and convenience.
- Voice cloning should only be used with voices you own or have explicit permission to use.

## License

The original ZONOS2 model is released under the Apache License 2.0.

This converted Safetensors package follows the same model license.

## Citation

If you find this model useful in an academic context, please cite the original ZONOS2 work:

    @misc{zyphra2025zonos,
      title     = {Zonos V2 Technical Report},
      author    = {Gabriel Clark, Sofian Mejjoute, Mohamed Osman, George Close, Beren Millidge},
      year      = {2026},
    }

## Credits

- Original model: https://github.com/Zyphra/ZONOS2
- Original Hugging Face repository: https://huggingface.co/Zyphra/ZONOS2
- BF16 Safetensors package: https://huggingface.co/drbaph/ZONOS2-BF16
- ComfyUI custom node: https://github.com/Saganaki22/Zonos2_TTS-ComfyUI