README
MioTTS-0.6B: Lightweight & Fast LLM-based TTS
MioTTS-0.6B is a lightweight, high-speed Text-to-Speech (TTS) model based on an LLM architecture. It is designed to generate high-quality speech in English and Japanese while maintaining low latency and minimal resource usage.
This model supports zero-shot voice cloning and is built on top of the efficient neural audio codec MioCodec-25Hz-24kHz.
๐ MioTTS Family
We offer a range of model sizes to suit different performance and resource requirements.
| Model Name | Parameters | Base Model | License | RTF (Real-Time Factor) |
|---|---|---|---|---|
| MioTTS-0.1B | 0.1B | tiiuae/Falcon-H1-Tiny-Multilingual-100M-Base | Falcon-LLM License | 0.04 - 0.05 |
| MioTTS-0.4B | 0.4B | LiquidAI/LFM2-350M | LFM Open License v1.0 | 0.035 - 0.045 |
| MioTTS-0.6B | 0.6B | Qwen/Qwen3-0.6B-Base | Apache 2.0 | 0.055 - 0.065 |
| MioTTS-1.2B | 1.2B | LiquidAI/LFM2.5-1.2B-Base | LFM Open License v1.0 | 0.065 - 0.075 |
| MioTTS-1.7B | 1.7B | Qwen/Qwen3-1.7B-Base | Apache 2.0 | 0.10 - 0.11 |
| MioTTS-2.6B | 2.6B | LiquidAI/LFM2-2.6B | LFM Open License v1.0 | 0.135 - 0.145 |
RTF values represent the range observed when generating approximately 15 seconds of audio across multiple runs. Measured on an NVIDIA RTX 5090 using vLLM 0.15.1.
๐ Key Features
- Lightweight & Fast: Optimized for speed, making it suitable for consumer-grade GPUs and edge deployment.
- Bilingual Support: Trained on approximately 100,000 hours of English and Japanese data.
- Voice Cloning: Supports high-fidelity zero-shot voice cloning from a short reference audio clip.
- Efficient Codec: Uses Aratako/MioCodec-25Hz-24kHz, which operates at a low framerate (25Hz) for faster generation without sacrificing quality.
๐ Inference
We provide a dedicated repository for inference, including installation instructions and example WebUI.
๐ GitHub: Aratako/MioTTS-Inference
๐ง Audio Samples
Below are some samples generated by MioTTS-0.6B.
Note: The reference audio samples below were generated using Aratako/T5Gemma-TTS-2b-2b and gemini-2.5-pro-tts.
| Case | Text | Reference Audio | Generated Audio |
|---|---|---|---|
| English 1 | "The old library was silent, save for the gentle ticking of a clock somewhere in the shadows. As I ran my fingers along the dusty spines of the books, I felt a strange sense of nostalgia, as if I had lived a thousand lives within these walls." | ||
| English 2 | "Hey! I haven't seen you in ages. Do you want to grab some coffee later? I've got so much to tell you!" | ||
| Japanese 1 | "ๆฐ่ฑกๅบใซใใใพใใจใๅคงๅใฎๅฐ้ขจ10ๅทใฏใๆๆฅใฎๆใๆนใซใใใฆ้ขๆฑๅฐๆนใซๆฅ่ฟใใ่ฆ่พผใฟใงใใๆฒฟๅฒธ้จใงใฏ้ซๆณขใซ่ญฆๆใๅฟ ่ฆใงใใ" | ||
| Japanese 2 | "ใใฎๆฃฎใซใฏใๅคใ่จใไผใใใใใพใใใๆใๆใ้ซใๆใๅคใ้ใใซ่ณใๆพใพใใฐใ้ขจใฎๆญๅฃฐใ่ใใใใจใใใฎใงใใ็งใฏๅไฟกๅ็ใงใใใใใใฎๅคใ็ขบใใซ่ชฐใใ็งใๅผใถๅฃฐใ่ใใใฎใงใใ" |
๐๏ธ Training Details
- Data: ~100k hours of speech data (English & Japanese).
- Codec: MioCodec-25Hz-24kHz
- Base Model: Initialized from Qwen/Qwen3-0.6B-Base.
๐ License & Ethical Restrictions
License
This model is released under the Apache 2.0.
Ethical Considerations & Limitations
While this model is released under a permissive license, we aim to promote responsible AI development and urge users to respect the rights of others.
- Voice Cloning: Please respect the privacy and rights of individuals. We strongly discourage using this model to clone the voices of real people (especially non-consenting individuals) for deceptive or harmful purposes.
- No Misinformation: This model should not be used to generate deepfakes intended to mislead others or spread misinformation.
- Disclaimer: The developers assume no liability for any misuse of this model. Users are solely responsible for ensuring their use of the generated content complies with applicable laws and regulations in their jurisdiction.
๐ Acknowledgments
- Compute Support: Part of the compute resources for this project were provided by Saldra, Witness and Lumina Logic Minds. We deeply appreciate their support.
- Base Model: We thank the developers of the base LLM for their open-source contributions.
- Community: Thanks to the open-source community for the datasets and tools that made this project possible.
๐๏ธ Citation
If you use MioTTS in your research or project, please cite it as follows:
@misc{miotts,
author = {Chihiro Arata},
title = {MioTTS: Lightweight and Fast LLM-based Text-to-Speech},
year = {2026},
publisher = {Hugging Face},
journal = {Hugging Face repository},
howpublished = {\url{https://huggingface.co/collections/Aratako/miotts}}
}
Contributors
5 commits
Similar repos
Used in code
README
MioTTS-0.6B: Lightweight & Fast LLM-based TTS
MioTTS-0.6B is a lightweight, high-speed Text-to-Speech (TTS) model based on an LLM architecture. It is designed to generate high-quality speech in English and Japanese while maintaining low latency and minimal resource usage.
This model supports zero-shot voice cloning and is built on top of the efficient neural audio codec MioCodec-25Hz-24kHz.
๐ MioTTS Family
We offer a range of model sizes to suit different performance and resource requirements.
| Model Name | Parameters | Base Model | License | RTF (Real-Time Factor) |
|---|---|---|---|---|
| MioTTS-0.1B | 0.1B | tiiuae/Falcon-H1-Tiny-Multilingual-100M-Base | Falcon-LLM License | 0.04 - 0.05 |
| MioTTS-0.4B | 0.4B | LiquidAI/LFM2-350M | LFM Open License v1.0 | 0.035 - 0.045 |
| MioTTS-0.6B | 0.6B | Qwen/Qwen3-0.6B-Base | Apache 2.0 | 0.055 - 0.065 |
| MioTTS-1.2B | 1.2B | LiquidAI/LFM2.5-1.2B-Base | LFM Open License v1.0 | 0.065 - 0.075 |
| MioTTS-1.7B | 1.7B | Qwen/Qwen3-1.7B-Base | Apache 2.0 | 0.10 - 0.11 |
| MioTTS-2.6B | 2.6B | LiquidAI/LFM2-2.6B | LFM Open License v1.0 | 0.135 - 0.145 |
RTF values represent the range observed when generating approximately 15 seconds of audio across multiple runs. Measured on an NVIDIA RTX 5090 using vLLM 0.15.1.
๐ Key Features
- Lightweight & Fast: Optimized for speed, making it suitable for consumer-grade GPUs and edge deployment.
- Bilingual Support: Trained on approximately 100,000 hours of English and Japanese data.
- Voice Cloning: Supports high-fidelity zero-shot voice cloning from a short reference audio clip.
- Efficient Codec: Uses Aratako/MioCodec-25Hz-24kHz, which operates at a low framerate (25Hz) for faster generation without sacrificing quality.
๐ Inference
We provide a dedicated repository for inference, including installation instructions and example WebUI.
๐ GitHub: Aratako/MioTTS-Inference
๐ง Audio Samples
Below are some samples generated by MioTTS-0.6B.
Note: The reference audio samples below were generated using Aratako/T5Gemma-TTS-2b-2b and gemini-2.5-pro-tts.
| Case | Text | Reference Audio | Generated Audio |
|---|---|---|---|
| English 1 | "The old library was silent, save for the gentle ticking of a clock somewhere in the shadows. As I ran my fingers along the dusty spines of the books, I felt a strange sense of nostalgia, as if I had lived a thousand lives within these walls." | ||
| English 2 | "Hey! I haven't seen you in ages. Do you want to grab some coffee later? I've got so much to tell you!" | ||
| Japanese 1 | "ๆฐ่ฑกๅบใซใใใพใใจใๅคงๅใฎๅฐ้ขจ10ๅทใฏใๆๆฅใฎๆใๆนใซใใใฆ้ขๆฑๅฐๆนใซๆฅ่ฟใใ่ฆ่พผใฟใงใใๆฒฟๅฒธ้จใงใฏ้ซๆณขใซ่ญฆๆใๅฟ ่ฆใงใใ" | ||
| Japanese 2 | "ใใฎๆฃฎใซใฏใๅคใ่จใไผใใใใใพใใใๆใๆใ้ซใๆใๅคใ้ใใซ่ณใๆพใพใใฐใ้ขจใฎๆญๅฃฐใ่ใใใใจใใใฎใงใใ็งใฏๅไฟกๅ็ใงใใใใใใฎๅคใ็ขบใใซ่ชฐใใ็งใๅผใถๅฃฐใ่ใใใฎใงใใ" |
๐๏ธ Training Details
- Data: ~100k hours of speech data (English & Japanese).
- Codec: MioCodec-25Hz-24kHz
- Base Model: Initialized from Qwen/Qwen3-0.6B-Base.
๐ License & Ethical Restrictions
License
This model is released under the Apache 2.0.
Ethical Considerations & Limitations
While this model is released under a permissive license, we aim to promote responsible AI development and urge users to respect the rights of others.
- Voice Cloning: Please respect the privacy and rights of individuals. We strongly discourage using this model to clone the voices of real people (especially non-consenting individuals) for deceptive or harmful purposes.
- No Misinformation: This model should not be used to generate deepfakes intended to mislead others or spread misinformation.
- Disclaimer: The developers assume no liability for any misuse of this model. Users are solely responsible for ensuring their use of the generated content complies with applicable laws and regulations in their jurisdiction.
๐ Acknowledgments
- Compute Support: Part of the compute resources for this project were provided by Saldra, Witness and Lumina Logic Minds. We deeply appreciate their support.
- Base Model: We thank the developers of the base LLM for their open-source contributions.
- Community: Thanks to the open-source community for the datasets and tools that made this project possible.
๐๏ธ Citation
If you use MioTTS in your research or project, please cite it as follows:
@misc{miotts,
author = {Chihiro Arata},
title = {MioTTS: Lightweight and Fast LLM-based Text-to-Speech},
year = {2026},
publisher = {Hugging Face},
journal = {Hugging Face repository},
howpublished = {\url{https://huggingface.co/collections/Aratako/miotts}}
}
Similar repos
Used in code
Linked in READMEs
Contributors
5 commits