StyleTTS 2

Ultra

Human-Level Text-to-Speech with Style Transfer

Try Free StyleTTS 2 Browse Voices (6)
Moderate Speed
Excellent Quality
No Cloning
1 Languages

About StyleTTS 2

StyleTTS 2 achieves human-level text-to-speech synthesis through style diffusion and adversarial training. It generates 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.

Expressive Style

Models speaking style so delivery varies naturally with the text.

Natural Prosody

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

Studio Voices

Choose from ready-made StyleTTS 2 voices in the voice library.

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

    Create a free TextToSpeechAI account to get starter credits.

  2. 2

    Choose the StyleTTS2 engine

    Select a StyleTTS2 voice from the voice library.

  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.

Not on TextToSpeechAI. StyleTTS2 voices here are ready-made voices from the library. For voice cloning, use the Clone Voice tool, which runs Chatterbox.

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. For other languages, use Piper or Bark voices, or a cloned voice.

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. By comparison, standard models like VITS cost 10 credits per 1000 characters and Piper costs 1 credit per 1,000 characters.

Both are Ultra tier (50 credits per 1000 characters) and English. StyleTTS2 is much faster, while Tortoise can sound slightly more natural on long passages. Choose StyleTTS2 when you need many clips and Tortoise when time is not a constraint.

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 each voice in the library has its own delivery, so choosing a different voice changes the prosody.

Pick a StyleTTS2 voice from our library, 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 Not Supported
  • Languages 1
  • GPU VRAM 4-6GB
  • Credits/1000 chars 50

Try StyleTTS 2 Now

Generate your first audio free. No credit card required.

Start Free

Other TTS Engines

Bark
Slow | Very Good
Chatterbox
Moderate | Very Good
Piper TTS
Very Fast | Good
Compare All Engines