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Index Tts

IndexTTS is a zero-shot text-to-speech system that clones a voice from a single reference audio clip. The latest release, IndexTTS-2.5, supports Chinese, English, Japanese, Spanish and Arabic, with fine-grained emotion control, speaking speed control, pronunciation control (Pinyin / CMU phonemes / Japanese Kana), and faster inference than IndexTTS-2. Example audio files are downloaded on demand from HuggingFace/ModelScope the first time the WebUI starts, so Git LFS is no longer required. We use uv to manage the project's dependency environment. It is required for a reliable installation:

View Index Tts on GitHub
Navid Moazzezby Navid Moazzez·Updated Sept 30, 2026·1 min read
Index Tts

IndexTTS is a zero-shot text-to-speech system that clones a voice from a single reference audio clip. The latest release, IndexTTS-2.5, supports Chinese, English, Japanese, Spanish and Arabic, with fine-grained emotion control, speaking speed control, pronunciation control (Pinyin / CMU phonemes / Japanese Kana), and faster inference than IndexTTS-2.

Example audio files are downloaded on demand from HuggingFace/ModelScope the first time the WebUI starts, so Git LFS is no longer required.

We use uv to manage the project's dependency environment. It is required for a reliable installation:

Index Tts at a glance

Stars24k
Forks2.9k
LanguagePython
LicenseOther
Last update2026-08-18
Contributors30

How to install Index Tts

bash git clone https://github.com/index-tts/index-tts.git && cd index-tts 

Where Index Tts is listed

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