ChatTTS

ChatTTS is an open-source text-to-speech model designed specifically for conversational scenarios, such as dialogue responses for large language model assistants, audio/video introductions, and interactive applications. It supports both Chinese and English and uses large-scale bilingual training data to produce natural, expressive synthesized speech. The project has gained significant community traction with 20K+ stars on GitHub and is available through a simple Python API. ChatTTS distinguishes itself by focusing on dialogue rather than generic narration. Instead of requiring a complex pipeline setup, users can install it with pip, load pre-trained models, and generate speech from plain text with just a few lines of code. It works well in Jupyter notebooks and can be integrated into web, mobile, desktop, or embedded systems through SDKs and APIs. Developers can also fine-tune the model on custom datasets to develop unique voice profiles. The project emphasizes safety and control, with ongoing work on model controllability, watermarking, and LLM integration. While the website mentions plans to open-source a trained base model for researchers, the GitHub repository and online demo make it immediately accessible. ChatTTS is a strong choice for developers looking to add natural conversational voice output to chatbots, learning tools, and other AI-driven applications.