Model reference · open weights

XTTS

Audio coqui Text→speech 1 build Its own licence terms 7.9M dl/mo

XTTS is an open-weight audio or speech model from coqui. XTTS-v2 (BF16) weighs 1.9 GB; the smallest configuration that runs it is RTX 3060 12 GB.

  • XTTS-v2 is a text-to-speech model developed by coqui that enables voice cloning and cross-language speech generation using a 6-second audio clip.
  • The model supports 17 languages and operates at a 24khz sampling rate.
  • It is distributed under the Coqui Public Model License.

Summary of the coqui/XTTS-v2 model card, 2026-10-01

What it is

Released bycoqui
Released2023-10-31
VRAM1.9 GB for the weights

What it runs on

Memory and cards for XTTS-v2 (BF16)

1.9 GBweights, file size
1.6 GBruntime overhead
CardOne streamMemory
RTX 3060 12 GBfits11.6 GB
RTX 4060 Ti 16 GBfits15.4 GB
RTX 3090 24 GBfits23.4 GB
RTX 4090 24 GBfits23.4 GB
RTX 5090 32 GBfits31.0 GB
L40S 48 GBfits44.0 GB
A100 80 GBfits78.2 GB
H100 80 GBfits78.1 GB
RTX PRO 6000 Blackwell 96 GBfits93.8 GB
DGX Spark (GB10) 128 GB unifiedfits107 GB
H200 141 GBfits138 GB
B200 180 GBfits176 GB

From the model card

What coqui says about XTTS

Read the model card

ⓍTTS is a Voice generation model that lets you clone voices into different languages by using just a quick 6-second audio clip. There is no need for an excessive amount of training data that spans countless hours.

This is the same or similar model to what powers Coqui Studio and Coqui API.

Features

  • Supports 17 languages.
  • Voice cloning with just a 6-second audio clip.
  • Emotion and style transfer by cloning.
  • Cross-language voice cloning.
  • Multi-lingual speech generation.
  • 24khz sampling rate.

Updates over XTTS-v1

  • 2 new languages; Hungarian and Korean
  • Architectural improvements for speaker conditioning.
  • Enables the use of multiple speaker references and interpolation between speakers.
  • Stability improvements.
  • Better prosody and audio quality across the board.

Languages

XTTS-v2 supports 17 languages: English (en), Spanish (es), French (fr), German (de), Italian (it), Portuguese (pt), Polish (pl), Turkish (tr), Russian (ru), Dutch (nl), Czech (cs), Arabic (ar), Chinese (zh-cn), Japanese (ja), Hungarian (hu), Korean (ko) Hindi (hi).

Stay tuned as we continue to add support for more languages. If you have any language requests, feel free to reach out!

Code

The code-base supports inference and fine-tuning.

Demo Spaces

  • XTTS Space : You can see how model performs on supported languages, and try with your own reference or microphone input
  • XTTS Voice Chat with Mistral or Zephyr : You can experience streaming voice chat with Mistral 7B Instruct or Zephyr 7B Beta
🐸💬 CoquiTTScoqui/TTS on Github
💼 DocumentationReadTheDocs
👩‍💻 QuestionsGitHub Discussions
🗯 CommunityDiscord

License

This model is licensed under Coqui Public Model License. There's a lot that goes into a license for generative models, and you can read more of the origin story of CPML here.

Contact

You can also mail us at info@coqui.ai.

Using 🐸TTS API:

from TTS.api import TTS
tts = TTS("tts_models/multilingual/multi-dataset/xtts_v2", gpu=True)

# generate speech by cloning a voice using default settings
tts.tts_to_file(text="It took me quite a long time to develop a voice, and now that I have it I'm not going to be silent.",
                file_path="output.wav",
                speaker_wav="/path/to/target/speaker.wav",
                language="en")

Using 🐸TTS Command line:

 tts --model_name tts_models/multilingual/multi-dataset/xtts_v2 \
     --text "Bugün okula gitmek istemiyorum." \
     --speaker_wav /path/to/target/speaker.wav \
     --language_idx tr \
     --use_cuda true

Using the model directly:

from TTS.tts.configs.xtts_config import XttsConfig
from TTS.tts.models.xtts import Xtts

config = XttsConfig()
config.load_json("/path/to/xtts/config.json")
model = Xtts.init_from_config(config)
model.load_checkpoint(config, checkpoint_dir="/path/to/xtts/", eval=True)
model.cuda()

outputs = model.synthesize(
    "It took me quite a long time to develop a voice and now that I have it I am not going to be silent.",
    config,
    speaker_wav="/data/TTS-public/_refclips/3.wav",
    gpt_cond_len=3,
    language="en",
)

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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