index-tts
A zero-shot TTS system that clones voices from a single audio clip with multilingual and fine-grained controll
free（有免费版）23.8k github stars
index-tts 简介
IndexTTS is a zero-shot text-to-speech system designed for industrial use, enabling voice cloning from just one reference audio sample. It does not require speaker-specific fine-tuning or parallel training data.
The latest version, IndexTTS-2.5, supports five languages: Chinese, English, Japanese, Spanish, and Arabic. It offers controls for emotion, speaking speed, and pronunciation using language-specific phonetic representations (e.g., Pinyin, CMU phonemes, Japanese Kana).
IndexTTS-2.5 improves upon its predecessor with faster inference speed while maintaining high-quality synthesis and cross-lingual capability.
核心功能
- Zero-shot voice cloning from a single reference audio clip
- Support for Chinese, English, Japanese, Spanish, and Arabic
- Fine-grained emotion control during speech synthesis
- Adjustable speaking speed and pronunciation via phonetic inputs
- Faster inference compared to IndexTTS-2
优点 & 缺点
优点
- • Truly zero-shot — no per-speaker training or fine-tuning required
- • Multilingual support with language-appropriate phonetic control
- • Open-source implementation with active GitHub activity (23.7k stars)
缺点
- • No official website or hosted demo — requires local setup and technical expertise
- • License is unspecified, raising uncertainty about commercial use rights
- • No documented support for real-time streaming or low-latency deployment