Model reference · open weights
IndexTTS-2 is an open-weight audio or speech model from IndexTeam. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.
Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.
What it is
| Released by | IndexTeam |
|---|---|
| Type | Audio & music |
| Task | Text→speech |
| Released | 2025-06-18 |
| Popularity | 9k downloads / month |
| Licence | Unknown |
About
🌟 If you find our work helpful, please leave us a star and cite our paper.
IndexTTS2
@article{zhou2025indextts2,
title={IndexTTS2: A Breakthrough in Emotionally Expressive and Duration-Controlled Auto-Regressive Zero-Shot Text-to-Speech},
author={Siyi Zhou, Yiquan Zhou, Yi He, Xun Zhou, Jinchao Wang, Wei Deng, Jingchen Shu},
journal={arXiv preprint arXiv:2506.21619},
year={2025}
}
IndexTTS
@article{deng2025indextts,
title={IndexTTS: An Industrial-Level Controllable and Efficient Zero-Shot Text-To-Speech System},
author={Wei Deng, Siyi Zhou, Jingchen Shu, Jinchao Wang, Lu Wang},
journal={arXiv preprint arXiv:2502.05512},
year={2025},
doi={10.48550/arXiv.2502.05512},
url={https://arxiv.org/abs/2502.05512}
}
From the published model card. Full card on the HuggingFace links in the sidebar.
How it works
Using it via the API
Once AxForge deploys indextts-2 for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (indextts-2 below is illustrative; you get the exact model name on deployment.)
$ curl -sS https://api.axforge.ai/v1/audio/transcriptions \ -H "Authorization: Bearer $AXFORGE_API_KEY" \ -F model="indextts-2" -F file=@audio.mp3
Create an account — your API key is available in the console. 3M free tokens every 30 days with every new account.