StyleTTS 2

Ultra

Human-Level Text-to-Speech with Style Transfer

Try Free StyleTTS 2 Browse Voices (6)
Moderate Speed
Excellent Quality
Yes Cloning
1 Languages

About StyleTTS 2

StyleTTS 2 achieves human-level text-to-speech synthesis through style diffusion and adversarial training. It can transfer speaking styles from reference audio while generating highly natural speech that rivals real human recordings. StyleTTS 2 represents the state-of-the-art in TTS quality and naturalness.

Key Features

Human-Level Quality

Produces speech indistinguishable from human recordings in blind tests.

Style Transfer

Transfer speaking style from any reference audio sample.

Natural Prosody

Perfect rhythm, stress, and intonation with diffusion-based modeling.

Voice Cloning

Clone voices with exceptional accuracy and naturalness.

Fast Inference

Faster than autoregressive models while maintaining quality.

Open Source

MIT licensed with full commercial use rights.

Use Cases

Premium Audiobooks Professional Voiceovers Film & TV Production High-End Advertising Podcast Production Voice Acting

StyleTTS 2 Voices

View All 6
StyleTTS2 Default
EN
StyleTTS2 Expressive
EN
StyleTTS2 Fast
EN
StyleTTS2 Natural
EN
StyleTTS2 Neutral
EN
StyleTTS2 Quality
EN

How to Use StyleTTS 2

  1. 1

    Sign up free or run the demo

    Create a free TextToSpeechAI account to get starter credits, or use the homepage demo to hear StyleTTS2 without signing in.

  2. 2

    Choose the StyleTTS2 engine

    Select a StyleTTS2 voice from the voice library. To clone a voice, upload a 10-30 second reference clip and StyleTTS2 will transfer its style.

  3. 3

    Enter your text

    Paste or type the script you want narrated. StyleTTS2 excels at English and delivers natural prosody, stress, and intonation across long passages.

  4. 4

    Generate the audio

    Click generate and TextToSpeechAI renders your StyleTTS2 audio on GPU. Ultra-tier StyleTTS2 costs 50 credits per 1000 characters.

  5. 5

    Download or use the API

    Download the finished StyleTTS2 audio as MP3, WAV, or OGG, or call the TextToSpeechAI API with your StyleTTS2 voice to automate generation.

StyleTTS 2 API

Generate speech programmatically using the TextToSpeechAI REST API.

curl -X POST "https://api.texttospeechai.com/v1/generate/" \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "StyleTTS 2 produces speech so natural, it rivals professional human recordings.",
    "voice": "styletts2-default"
  }'
Read API Docs Get Your API Key

Frequently Asked Questions

StyleTTS2 is a state-of-the-art text-to-speech model that achieves human-level speech synthesis. It uses style diffusion and adversarial training to produce speech that is virtually indistinguishable from real human recordings in blind listening tests. You can try StyleTTS2 free on TextToSpeechAI.

StyleTTS2 produces the highest quality TTS audio available on TextToSpeechAI. In formal evaluations it reached human-level ratings on MOS (Mean Opinion Score) tests, with listeners often unable to distinguish it from a real human speaker. It sits in our Ultra tier alongside Tortoise for that reason.

Yes, StyleTTS2 supports voice cloning through style transfer. It extracts not just the timbre but the speaking patterns, rhythm, and emotional qualities from a reference clip. Provide 10-30 seconds of clear audio for the most accurate StyleTTS2 clone.

Yes. StyleTTS2 is released under the permissive MIT license, which allows full commercial use with no royalties. That makes it safe for audiobooks, advertising, film, and other professional StyleTTS2 projects where rights matter.

StyleTTS2 primarily supports English, since the model was trained on English datasets. If you need similar quality across multiple languages, F5-TTS on TextToSpeechAI is a better fit while still supporting voice cloning.

StyleTTS2 has moderate generation speed. It is much faster than autoregressive models like Tortoise but slower than lightweight engines like Piper. Because of its premium quality and compute cost, StyleTTS2 is priced in our Ultra tier rather than as a real-time model.

StyleTTS2 requires roughly 4-6GB of VRAM for inference. It is more memory-efficient than Bark or Tortoise while producing higher quality output. On TextToSpeechAI all StyleTTS2 processing runs on our GPUs, so you do not need any hardware of your own.

StyleTTS2 is an Ultra-tier model and costs 50 credits per 1000 characters on TextToSpeechAI. That premium pricing reflects its human-level quality and the GPU resources required. Standard models like Piper cost 10 credits per 1000 characters by comparison.

Choose StyleTTS2 when raw English audio quality is the top priority and you want the most natural-sounding result. Choose F5-TTS when you need fast multilingual synthesis with voice cloning. Both support cloning, but StyleTTS2 is Ultra tier (50 credits) while F5-TTS is Premium tier (25 credits).

StyleTTS2 generates high-quality audio at 24kHz. Through TextToSpeechAI you can download the result as MP3, WAV, or OGG, and we use high-quality encoding so the exceptional StyleTTS2 quality is preserved in the final file.

Yes. StyleTTS2 supports speaking-rate adjustments, and its style-transfer design lets you shape prosody by choosing different reference clips. Selecting audio with the rhythm and emotion you want gives you fine control over the StyleTTS2 delivery.

Pick a StyleTTS2 voice from our library or upload reference audio to create a cloned voice, then reference that voice in your API requests. TextToSpeechAI handles all GPU processing and returns a download URL with your premium StyleTTS2 audio.

Technical Specs

  • Generation Speed Moderate
  • Output Quality Excellent
  • Voice Cloning Supported
  • Languages 1
  • GPU VRAM 4-6GB
  • Credits/1000 chars 50

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