ChatTTS
Conversational TTS for dialogue, with laughter and pauses.
- Stars
- 39.9K
- Forks
- 4.3K
- Open issues
- 63
- Last commit
- 2026-04-10
Live from the GitHub API · updated 2026-10-15
What is ChatTTS?
ChatTTS is optimized for dialogue-style speech in Chinese and English and can insert prosodic features such as laughter and pauses, making it well-suited to LLM assistants.
Key features
- Dialogue-optimized prosody
- Fine-grained control tokens ([laugh], [uv_break])
- Chinese and English
System requirements
- Platforms
- Windows · macOS · Linux
- GPU
- NVIDIA recommended
- VRAM
- 4 GB+
How to install ChatTTS
Summarized from the project’s README. Projects change quickly — check the GitHub page for the latest instructions.
From source
- 1Clone and install.
git clone https://github.com/2noise/ChatTTS cd ChatTTS pip install --upgrade -r requirements.txt - 2Start the web demo.
python examples/web/webui.py
Strengths
- Very natural conversational speech
Limitations
- Weights are non-commercial
- Limited languages
ChatTTS alternatives compared
| Software | Stars | License | Platforms | VRAM |
|---|---|---|---|---|
| ChatTTS Conversational TTS for dialogue, with laughter and pauses. | 39.9K | AGPL-3.0 | 4 GB+ | |
| Kokoro A tiny 82M-parameter TTS model with surprisingly natural voices. | 9.3K | Apache-2.0 | — | |
| Fish Speech Multilingual TTS and voice cloning from Fish Audio. | 33.1K | Apache-2.0 | 4 GB+ | |
| F5-TTS Zero-shot voice cloning TTS based on flow matching. | 15.4K | MIT | — | |
| Whisper OpenAI’s open-source speech recognition and translation model. | 110.5K | MIT | ~1 GB (tiny) to ~10 GB (large) | |
| whisper.cpp Whisper in plain C/C++ — fast on CPUs, Apple Silicon and mobile. | 54.4K | MIT | — |
FAQ
Is ChatTTS free?
Yes — ChatTTS is open-source software released under the AGPL-3.0 license. Check the license (and any model weight licenses) before commercial use.
Does ChatTTS run on Windows, Mac and Linux?
ChatTTS supports: Windows, macOS, Linux.
What hardware do I need for ChatTTS?
NVIDIA recommended. VRAM: 4 GB+
How do I install ChatTTS?
1. Clone and install. 2. Start the web demo.
What are the best ChatTTS alternatives?
Popular alternatives include Kokoro, Fish Speech, F5-TTS, Whisper. See the comparison table on this page.