Model reference · open weights

MeloTTS-English

Audio myshell-ai Text→speech 1 build Open weights 191k dl/mo

MeloTTS-English is an open-weight audio or speech model from myshell-ai. MeloTTS-English (BF16) weighs 208 MB; the smallest configuration that runs it is RTX 3060 12 GB.

  • MeloTTS-English is a text-to-speech model developed by myshell-ai that generates speech in five English accents: American, British, Indian, Australian, and Default.
  • The model supports real-time inference on CPU and is released under the MIT license.

Summary of the myshell-ai/MeloTTS-English model card, 2026-10-01

What it is

Released bymyshell-ai
Released2024-02-29
VRAM208 MB for the weights

What it runs on

Memory and cards for MeloTTS-English (BF16)

208 MBweights, 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 myshell-ai says about MeloTTS-English

Read the model card

MeloTTS is a high-quality multi-lingual text-to-speech library by MIT and MyShell.ai. Supported languages include:

Model cardExample
English (American)Link
English (British)Link
English (Indian)Link
English (Australian)Link
English (Default)Link
SpanishLink
FrenchLink
Chinese (mix EN)Link
JapaneseLink
KoreanLink

Some other features include:

  • The Chinese speaker supports mixed Chinese and English.
  • Fast enough for CPU real-time inference.

Authors

Citation

@software{zhao2024melo,
  author={Zhao, Wenliang and Yu, Xumin and Qin, Zengyi},
  title = {MeloTTS: High-quality Multi-lingual Multi-accent Text-to-Speech},
  url = {https://github.com/myshell-ai/MeloTTS},
  year = {2023}
}

Usage

Without Installation

An unofficial live demo is hosted on Hugging Face Spaces.

Use it on MyShell

There are hundreds of TTS models on MyShell, much more than MeloTTS. See examples here. More can be found at the widget center of MyShell.ai.

Install and Use Locally

Follow the installation steps here before using the following snippet:

from melo.api import TTS

# Speed is adjustable
speed = 1.0

# CPU is sufficient for real-time inference.
# You can set it manually to 'cpu' or 'cuda' or 'cuda:0' or 'mps'
device = 'auto' # Will automatically use GPU if available

# English
text = "Did you ever hear a folk tale about a giant turtle?"
model = TTS(language='EN', device=device)
speaker_ids = model.hps.data.spk2id

# American accent
output_path = 'en-us.wav'
model.tts_to_file(text, speaker_ids['EN-US'], output_path, speed=speed)

# British accent
output_path = 'en-br.wav'
model.tts_to_file(text, speaker_ids['EN-BR'], output_path, speed=speed)

# Indian accent
output_path = 'en-india.wav'
model.tts_to_file(text, speaker_ids['EN_INDIA'], output_path, speed=speed)

# Australian accent
output_path = 'en-au.wav'
model.tts_to_file(text, speaker_ids['EN-AU'], output_path, speed=speed)

# Default accent
output_path = 'en-default.wav'
model.tts_to_file(text, speaker_ids['EN-Default'], output_path, speed=speed)

Join the Community

Open Source AI Grant

We are actively sponsoring open-source AI projects. The sponsorship includes GPU resources, fundings and intellectual support (collaboration with top research labs). We welcome both reseach and engineering projects, as long as the open-source community needs them. Please contact Zengyi Qin if you are interested.

Contributing

If you find this work useful, please consider contributing to the GitHub repo.

  • Many thanks to @fakerybakery for adding the Web UI and CLI part.

License

This library is under MIT License, which means it is free for both commercial and non-commercial use.

Acknowledgements

This implementation is based on TTS, VITS, VITS2 and Bert-VITS2. We appreciate their awesome work.

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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