Model reference · open weights

pipertts_pt-BR_dii

Audio OpenVoiceOS Text→speech 1 build Non-commercial 935 dl/mo

pipertts_pt-BR_dii is an open-weight audio or speech model from OpenVoiceOS.

For self-hosting, compare this build's requirements below with the GPU you plan to rent.

  • pipertts_pt-BR_dii is a text-to-speech voice model for Brazilian Portuguese developed by OpenVoiceOS.
  • It features a female voice named Dii and uses the Piper VITS architecture exported to ONNX for CPU inference.
  • The model is licensed under CC BY-NC-ND 4.0, which restricts use to non-commercial purposes and prohibits modifications or derivative works.

Summary of the OpenVoiceOS/pipertts_pt-BR_dii model card, 2026-10-01

What it is

Released byOpenVoiceOS
Released2025-06-28

From the model card

What OpenVoiceOS says about pipertts_pt-BR_dii

Read the model card

This is a text-to-speech voice model for Brazilian Portuguese. The voice is Dii, a female voice. It uses the Piper VITS architecture, exported to ONNX for CPU inference. It was fine-tuned from the base voice pipertts_pt-PT_dii, the closest available language for this voice.

How to use

This is a Piper VITS voice, in ONNX format. Use it with any Piper-compatible runtime, or with ovos-tts-plugin-piper in OVOS:

{
  "tts": {
    "module": "ovos-tts-plugin-piper",
    "ovos-tts-plugin-piper": {
      "voice": "OpenVoiceOS/pipertts_pt-BR_dii"
    }
  }
}

Command line, with the piper package installed:

echo "Bom dia, como você está?" | piper --model OpenVoiceOS/pipertts_pt-BR_dii --output_file output.wav

Training data

Trained on TigreGotico/tts-train-synthetic-dii_pt-BR.

Related links

  • Training-data collection: https://huggingface.co/collections/TigreGotico/synthetic-tts-datasets
  • phoonnx: https://github.com/TigreGotico/phoonnx
  • voiceclonnx: https://github.com/TigreGotico/voiceclonnx
  • TigreGotico: https://tigregotico.pt

Ownership and licensing

Miro and Dii are the recorded voices of two real people. The voices, the training data, and this model belong to TigreGotico Lda (https://tigregotico.pt).

This model is licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 (CC BY-NC-ND 4.0). You may use and share this model for non-commercial purposes only. Give attribution to TigreGotico Lda. Do not modify, adapt, or build new models from this model. Do not use the voice identity to create derivative voices.

For commercial use, for derivative models, or for any other license of the Miro or Dii voice identity, contact TigreGotico Lda.

The training checkpoint is kept out of this repository so a download is the model and not the training state. It is available on request.

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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.
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