VUI Labs Luna-TTS (and Luna-TTS Realtime)
Chinese voice-AI startup (Pandaily). Release month June 2026 per the Artificial Analysis leaderboard; technical report 2026-08-12 (Feng Yin et al., 22 authors). Supports zero-shot cloning, speech editing, emotion control, non-verbal vocalisations. We found no statement about open weights. Pandaily headline calls it China's 'Thinking Machines' and names Qian Yanmin (role not verified). Not the same as fluxions-ai 'Vui' (open Apache-2.0 small TTS).
- Input
- text, audio
- Output
- audio
- License
- proprietary
- Pricing
- per 1m characters: $15 (USD per 1M characters (Luna-TTS and Luna-TTS Character); voice cloning $3 per clone) source
- Verified
- 2026-09-29
How to call it
| Provider | Model id | Endpoint / URL | Docs |
|---|---|---|---|
| VUI Labs API | — | www.vuilabs.ai/ | — |
| arXiv (technical report) | — | arxiv.org/abs/2608.11593 | — |
Notable capabilities (2)
- Diffusion-language-model TTS (non-autoregressive): Generates the whole RVQ token grid in a fixed number of parallel refinement steps; the Realtime variant is blockwise-autoregressive over 1.28 s blocks (RTF 0.0240, 41.6 ms first-block latency locally). 0.6B backbone, ~1M hours of zh/en/ja/ko speech. source
- Chinese startup at the top of TTS arenas (found after launch): Pandaily (Aug 2026) reported #1 on Hugging Face TTS Arena and #3 on Artificial Analysis Speech Arena; on 2026-09-29 AA shows it #8 (Elo 1230). source