ChatTTS vs GPT-SoVITS
Dialogue speech synthesis and voice cloning compared
ChatTTS focuses on expressive, multi-speaker speech for dialogue, while GPT-SoVITS centers on adapting speech to a target voice. Both provide Python-based speech generation, but GPT-SoVITS also emphasizes voice conversion, fine-tuning, and WebUI tools for preparing audio.
ChatTTS: Generate Expressive Speech for Dialogue
ChatTTS is a generative text-to-speech model built for dialogue, including assistant-style speech. It supports Chinese and English, multiple speakers, and controls for prosody such as pauses and laughter.
GPT-SoVITS: Clone Voices and Generate Speech from Text
GPT-SoVITS is a Python voice-cloning and text-to-speech toolkit with a WebUI for training and inference. It supports zero-shot synthesis from a short voice sample and fine-tuning with a small speaker dataset.
| ChatTTS | GPT-SoVITS | |
|---|---|---|
| Language | Python | Python |
| License | AGPL-3.0 | MIT |
| Stars | 39.9k | 62.7k |
| Forks | 4.3k | 6.7k |
| Last analyzed | Oct 3, 2026 | Oct 12, 2026 |
Key differences
- ChatTTS is designed for conversational delivery, with controls for cues such as pauses and laughter; GPT-SoVITS focuses on voice cloning, speech conversion, and text-to-speech.
- ChatTTS supports Chinese and English, with English described as experimental; GPT-SoVITS lists Chinese, English, Japanese, Korean, and Cantonese workflows.
- ChatTTS offers multiple speaker options and streaming generation; GPT-SoVITS supports zero-shot synthesis from a short reference clip and fine-tuning with a small amount of voice data.
- ChatTTS provides command-line, web UI, and Python inference examples; GPT-SoVITS offers WebUI workflows for audio segmentation, transcription, labeling, and fine-tuning.
- ChatTTS code uses AGPLv3+ and its released model has a separate CC BY-NC 4.0 license; GPT-SoVITS is licensed under MIT.
- GPT-SoVITS documents installation for Windows, Linux, macOS, and Docker, with CPU and accelerator options; ChatTTS notes that a 30-second clip requires at least 4 GB of GPU memory.
Choose ChatTTS if you…
- want expressive dialogue audio with cues such as pauses or laughter.
- need multiple speaker options or streaming speech generation.
- are exploring conversational synthesis in Chinese or experimental English.
Choose GPT-SoVITS if you…
- want to clone or adapt a voice using a short reference clip or a small training dataset.
- need speech conversion or cross-lingual voice workflows.
- want WebUI tools for preparing audio and fine-tuning models.
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This comparison is generated with AI from the OSRepos analyses of both projects. Always check each project's repository and documentation before choosing.