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VITS

Default

Libera English Neutral VITS

Default is a neutral AI voice powered by the VITS text-to-speech model. This free-tier voice speaks English and delivers good-quality speech synthesis. With near-instant generation speed and a quality rating of 3/5, Default is well-suited for general-purpose text-to-speech with natural prosody. The VITS engine is developed by Jaehyeon Kim et al. under the MIT license, making it safe for commercial use. Key capabilities include: end-to-end synthesis, natural prosody, fast inference, multiple speakers.

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VITSModeloinformoj

& Modelo: VITS
Programisto Jaehyeon Kim et al.
Kvalito
Rapideco Fiksa
Licenco MIT
Klonado Ne havebla
Tamuz Libera (sen kreditoj)
Parameters 25M
Architecture VAE + Normalizing Flows + GAN
Training Data 585 hours
Year 2021

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Oftaj demandoj

VITS (Variational Inference with adversarial learning for end-to-end Text-to-Speech) is a parallel end-to-end TTS method that generates more natural sounding audio than current two-stage models. It adopts variational inference augmented with normalizing flows and an adversarial training process, achieving a significant improvement in naturalness.

VITS was developed by Jaehyeon Kim et al. and is released under the MIT license, which permits commercial use of generated audio.

VITS supports 4 languages: English, Chinese, Japanese, Korean.

VITS is in the Free tier — free — no credits required. You can preview any VITS voice for free before generating full audio.

VITS has very fast generation speed. It runs in near real-time, making it suitable for streaming and interactive applications.

VITS is rated 3/5 for audio quality on TTS.ai. It delivers good quality speech suitable for most applications.

No, VITS uses a fixed set of built-in voices. For voice cloning, try models like CosyVoice 2, GPT-SoVITS, or Chatterbox.

Yes, VITS is specifically recommended for general-purpose text-to-speech with natural prosody. Its end-to-end synthesis, natural prosody, fast inference capabilities make it an excellent choice for this use case.

Yes, VITS is licensed under MIT, which allows commercial use. Audio generated with VITS voices can be used in videos, podcasts, apps, games, and any other commercial project.

Yes, all voices on TTS.ai use commercially-licensed open-source models (MIT, Apache 2.0). The generated audio is yours to use in videos, podcasts, apps, games, and any other commercial application.

Send a POST request to /api/v1/tts/ with the model name and voice ID. See our API Documentation page for code examples in Python, JavaScript, Go, and cURL.

Yes, click the play button on this page to hear a sample. You can also type custom text on the Text to Speech page and generate a free preview with any voice.

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