Verified project record

2noise/ChatTTS

ChatTTS is a text-to-speech model optimized for dialogue scenarios, providing fine-grained prosodic control and multi-speaker support. It is released for academic purposes only under a CC BY-NC 4.0 license and supports English and Chinese.

Project overview

Project type: Model Runtime · Audio & Speech
Use cases: Audio & Speech
Deployment: Python environment
License: AGPL-3.0

Best for

Researchers and creators looking for an academic text-to-speech model to study or test dialogue scenarios, multi-speaker synthesis, and prosodic control in English or Chinese.

Key capabilities

Optimized for dialogue-based tasks, enabling natural and expressive speech synthesis with multiple speakers support.
Predicts and controls fine-grained prosodic features including laughter, pauses, and interjections via special tokens.
Capability to control additional emotions during speech synthesis.
Launches a local WebUI for interaction with the model.
Executes inference from the command line and saves audio files.

Limitations and risks

The released model is intended for educational and research purposes.
Model stability is not good enough, with reported issues such as the occurrence of multiple speakers or poor audio quality.
Only English and Chinese are currently supported by the model.
Token-level control is restricted to only laugh, uv_break, and lbreak units.
The model is published under the CC BY-NC 4.0 license and should not be used for commercial purposes.
A small amount of high-frequency noise was added during training, and audio quality was compressed using MP3 to prevent malicious use.

Getting started

Setup involves a medium difficulty process requiring a Python environment setup and model weights download from HuggingFace. Users can install via pip or clone the repository to launch the WebUI or run CLI scripts.

Evidence and sources

GitHub project description: A generative speech model for daily dialogue.
README: ChatTTS is a text-to-speech model designed specifically for dialogue scenarios such as LLM assistant.
README: This repo contains the algorithm infrastructure and some simple examples.
README: - [x] English - [x] Chinese
README: 1. **Conversational TTS**: ChatTTS is optimized for dialogue-based tasks, enabling natural and expressive speech synthesis. It supports multiple speakers, facilitating interactive…

Reviewed at: 2026-07-17T08:02:09Z