Saki (サキ, previously known as "JA-F2" and "Masaki") is a female Japanese voicebank created by Dreamtonics originally for the Web Synthesizer V software. She was released for the desktop version Synthesizer V Studio on July 30, 2020. An update for Synthesizer V AI was announced on October 30, 2020 known as "Saki AI". Saki AI was released on December 25, 2020 and has a Lite version for Synthesizer V Studio Basic.
Her voice provider has never been revealed though was hinted to be a singer-songwriter according to AH-Software's webpage.
Saki is a singing Japanese voice database "based on the singing voice of a talented singer-songwriter" (identity not revealed). "Her natural singing voice naturally adapts to any occasion. It is a beautiful singing voice that is good at rock, etc. in the high range, from ballads and pops."
Saki (サキ) is a derivation of Masaki (マサキ), which was the former name for the library found in the website directory of Web Synthesizer V. At the time, Saki was only known simply as codename JA-F2. It was not until the release of Saki for Synthesizer V Studio that a proper name was officially given for her.
Similar to what YAMAHA does in VOCALOID for VY1 and a few other voicebanks, Saki has no official human-like avatar, being represented instead by an abstract symbol: a set of pink-red, lime-green, and sky-blue triplet stripes criss-crossing each other (forming secondary colors like orange-red, cyan-green, and fuchsia on the corners) to form a rhomboid capital letter "S" (for "Saki"). Characterization then shifts towards the song producer themselves rather than towards the product itself, so Saki is open to any form of visual interpretation.
Saki AI's pitch model was noted to be trained on 5 songs.
On February 19, 2021, Dreamtonics noted that users were experiencing issues with Synthesizer V Studio crashing along with the loss of activation statuses after upgrading to Saki AI v104. It was noted that upgrading to Synthesizer V Studio 1.2.1 and re-entering the activation code would solve this issue