Kasane Teto
| Kasane Teto | |
|---|---|
| Developer(s) |
|
| Initial release | 1 April 2008 |
| Stable release | Kasane Teto AI ver 104
/ 3 April 2023 |
| Engines | UTAU, Synthesizer V AI, VOICEPEAK |
| Available in |
|
| Type | Singing voice synthesizer |
| License | Proprietary |
| Website | kasaneteto |
| Kasane Teto | |
|---|---|
| First appearance | UTAU |
| Designed by | Sen (線) |
| Voiced by | Oyamano Mayo |
| In-universe information | |
| Full name | 重音テト (Kasane Teto) |
| Gender | Chimera |
Kasane Teto (Japanese: 重音テト, pronounced [kasane teto]) is a virtual singer software (voicebank) created on the Japanese textboard 2channel for April Fools' Day 2008. Although the software was initially created as a hoax and did not exist, it later was actually produced and made compatible with singing voice synthesis software UTAU, allowing it to sing. Teto has been introduced as a "diva born from a hoax".
Kasane Teto was also released as a voice model in 2021 for TALQu, a deep learning-based free speech software, in 2023 for Synthesizer V AI, a commercial singing voice synthesis software, and in 2025 for VOICEPEAK, a text-to-speech software.