DIFFSINGER
VOICE ARCHIVE

千亜紀チアキ

CHIAKI

どこにいても、歌を届けるね。

Chiaki is a virtual singer built from the voice of Suzukaze Chiaki. She is free to use, including commercially. She loves learning the languages of different places — wherever you are and whatever language you speak, she wants to sing you a song in yours.

Free download
BIRTHDAY
Feb 27
AGE
20
HEIGHT
156 cm
VOICE
Suzukaze Chiaki
ILLUST
shONe
DESIGN
亞莓
Full-body portrait of Chiaki

DEMO

JA/Japanese

さくらさくら

01 / 28

SING WITH ME

OpenUtau-Chiaki

A fork of OpenUtau tuned for Chiaki, with the voicebank and dedicated phonemizers built in. No separate voicebank install needed.

macOSComing soonWindowsComing soon
  1. 01Download and open OpenUtau-Chiaki.
  2. 02Click "Select singer" on a track and choose Chiaki.
  3. 03Pick the phonemizer for your lyrics' language and start singing.
Use another DiffSinger editor

Chiaki.zip

The voicebank zip for the official OpenUtau. No need to unzip it. Finnish and Ecclesiastical Latin need the DiffSinger Finnish / Latin Phonemizer plugins.

  1. 01Drag Chiaki.zip into the OpenUtau window, or choose "Install Singer" from the Tools menu.
  2. 02Click "Select singer" on a track and choose Chiaki.
  3. 03Choose the DiffSinger phonemizer for your language, e.g. DiffSinger Japanese for Japanese.
Download Chiaki.zipComing soonFinnish PhonemizerComing soonLatin PhonemizerComing soon

Language Plugins

The model can already sing the Learning languages, but OpenUtau has no built-in phonemizers for them, so install this plugin. OpenUtau-Chiaki and the official OpenUtau need different versions of it.

  1. 01Put the plugin file in the Plugins folder.
  2. 02Restart OpenUtau and choose Chiaki as the singer.
  3. 03Choose the phonemizer for the language, e.g. DiffSinger Indonesian Phonemizer.
  4. 04Write lyrics in the language's normal spelling, one syllable per note. You can also put a whole multi-syllable word on the first note and extend it with "+".
Plugin (for OpenUtau-Chiaki)Coming soonPlugin (for official OpenUtau)Coming soon

SPEC

Native

JAJapanese日本語ENEnglishZHChinese中文

Fluent

KOKorean한국어FRFrenchFrançaisESSpanishEspañolITItalianItalianoPTPortuguesePortuguêsDEGermanDeutschRURussianРусскийPLPolishPolskiUKUkrainianУкраїнськаTHThaiไทย

Learning

Still practicing, with a stronger accent

FIFinnishSuomiLALatinLatinaBEBelarusianБеларускаяBGBulgarianБългарскиMKMacedonianМакедонскиHBSSerbo-CroatianSrpskohrvatskiLOLaoລາວCACatalanCatalàGLGalicianGalegoIDIndonesianBahasa IndonesiaMSMalayBahasa MelayuEOEsperantoSWSwahiliKiswahiliHAWHawaiianʻŌlelo HawaiʻiMIMāoriTe Reo Māori

Engine

DiffSinger

Editor

OpenUtau

Vocoder

PC-NSF-HiFiGAN

44.1 kHz · hop 512

Recommended render steps

ACOUSTIC 40VARIANCE 40PITCH 10

Adjustable parameters

TENC

Tension

Higher sounds stronger and more piercing; lower sounds relaxed and soft.

GENC

Gender

Adjusts the thickness of the voice: positive sounds more mature, negative more youthful.

VELC

Consonant velocity

Changes consonant length, from crisp to drawn-out articulation.

PEXP

Pitch expressiveness

Controls how much the automatic pitch moves, from steady to expressive.

BREC

Breathiness

Adds or reduces breathiness.

DESIGN

Chiaki Default outfit design sheet

TERMS

Commercial use

✓ Allowed

Selling songs, commissions, games, and ads are all fine. No application needed.

Fan works and merch

✓ Allowed

You can make and sell fan works, covers, and merchandise of the character.

R-18 and political content

✓ Allowed

Subject matter itself is not restricted.

Embedding in commercial works

! Ask first

Contact us before embedding it in a game or app, and make sure users can’t extract the voicebank files.

Training derived models

! Ask first

Fine for research and non-commercial use. Contact us for commercial use.

Impersonation and fake recordings

✕ Not allowed

Don’t fake statements by Chiaki or the creator, and don’t use it for fraud.

Redistributing the voicebank

✕ Not allowed

If you want to share it, link to the official download page instead.

Extracting the portrait

✕ Not allowed

shONe’s portrait is licensed only for display inside OpenUtau.

When you publish a work, credit it asVocal: Chiaki

2026-10-21

These terms apply to the Chiaki voicebank ("the voicebank") and to any audio generated with it. By downloading or using the voicebank, you agree to these terms.

You may

  • Create songs, speech, and other works with the voicebank, and publish or sell them, including commissions, games, advertising, and ad revenue.
  • Create works on any subject, including R-18 and political content.
  • Make derivative works of the Chiaki character, and make and sell merchandise.
  • Embed the voicebank in games, apps, and other works.
  • Train or build new models (singing, speech TTS, or voice conversion) from audio generated with the voicebank, and release them for free.

When you use it

  • Credit the voicebank, e.g. "Vocal: Chiaki". If you can't credit it within the work, the description, end credits, or a related web page is fine.
  • When embedding the voicebank, don't let users extract its files. Contact us before embedding it in a commercial work, because the bundled vocoder's license does not allow commercial distribution.
  • Models trained on audio from the voicebank ("derived models") may be used for research and non-commercial purposes only. Contact us before selling a derived model or using one to make commercial works.
  • When releasing a derived model, state that it is derived from Chiaki, and don't name it "Chiaki" or anything that could be mistaken for an official release.
  • A derived model's own terms must likewise prohibit impersonating Chiaki or the creator and damaging the reputation of Chiaki or the creator, restrict commercial use, and require the same of any further derived models.

You may not

  • Impersonate Chiaki or the creator: faking statements, making fake recordings, fraud, or presenting a work as the official or personal position of the creator.
  • Use the voicebank in ways that damage the reputation of Chiaki or the creator. The creator decides what counts; subject matter alone (including R-18 and political content) does not.
  • Defame, insult, or harass real people, groups, or products.
  • Reverse engineer, decompile, or disassemble the voicebank's model files, extract or modify their weights, or publish methods for doing so.
  • Sell or distribute the voicebank itself on its own, modified or not. Link to the official download page instead.
  • Extract or reuse the portrait and icon drawn by shONe. They are copyrighted by shONe and licensed only for display with the voicebank inside OpenUtau.
  • Claim the voicebank as your own work.
  • Use the voicebank for anything illegal.

Vocoder

  • The bundled vocoder PC-NSF-HiFiGAN by OpenVPI (unmodified) is licensed under CC BY-NC-SA 4.0. This license restricts the distribution and modification of the vocoder itself, not the audio generated through it, so works made with the voicebank may be used commercially. Do not sell the vocoder on its own or distribute a modified copy of it.

Other

  • If you violate these terms, your permission to use the voicebank ends, and the creator may ask for works to be taken down or no longer used.
  • These terms may be updated; the latest version applies. Works already published are governed by the version in effect when they were published.
  • The voicebank is provided as is. The creator is not liable for any damage arising from its use.
  • If translations differ, the Chinese version prevails.