ChatTTS

ChatTTS is an open-source generative speech model designed for dialogue scenarios such as LLM assistants. It synthesizes expressive speech in English and Chinese, supports multiple speakers, and provides control over prosodic elements including laughter, pauses, and interjections. Streaming audio generation and sampled speaker embeddings are documented capabilities.

The repository includes a WebUI, command-line inference, Python usage examples, and audio export through torchaudio. It can be installed from PyPI, GitHub, or a local checkout and run with local Python dependencies and suitable hardware; the README cites at least 4GB of GPU memory for a 30-second clip. The code is AGPLv3+, while the released model is CC BY-NC 4.0 for academic and research use.