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news

24/05/2026
Important UTAU discontinuation notice.
19/05/2026
CHROMOID is now in co-ownership with Fractured Hope Co.
Languore has been updated to v2.0
01/05/2026
Languore has been released in BETA 1.9
18/04/2026
LÍDEM was updated to v2.6 and Hiragana should now display correctly.
13/04/2026
New X-Hitomu Icon.
05/04/2026
AC's [Fragment] and [Roulette] voicebanks are uploaded as "Legacy".
02/04/2026
AC's [mirrorShard] voicebank was updated to v3.4 !
20/03/2026
Update of Terms of Use is a WIP. Please refrain from commercial usage.
19/03/2026
"0rder Square" and "C0ld St0rage" themes released for UTAU and OpenUTAU!
15/03/2026
AZOA and LÍDEM have been released!

welcome

Hello! This is AltEOS' official UTAU archive, where I host all data and of my UTAUs (released or not) in case anything happens.
All data found here is official and may override old websites or links. I try to keep this site up to date !

news

Important Notice of Voicebank availability.
The following UTAUs will be discontinued: Slice, Elzro, Caché Völatta.Heccan's voicebank will stay up to act as a temporary guide for the Chance Reclist.For more details, read here,

Important Notice of Updates to the Terms of Use.
The ToU for the usage of my UTAUs will be changing in the near future. This update is directed towards the creation of a specific section for Commercial Usage and some more additions to the Section 3 - Miscellaneous.This update affects to all the UTAUs and groups that I manage, except the following: AZOA, LÍDEM, EC-49-Edgar, OX-10, IxelPlease stay tuned.Please read "Commercial Usage" in the main page of my Terms of Use.
This takes immediate effect and may take some time in being shown to the already uploaded voicebanks.

Languore, Ixel and the HaretsuLoids are now fully under the Nihilium Wave group/project.CHROMOID now is in shared ownership with Fractured Hope Co.

Languore released in BETA 2.0!! Enjoy this androgynous voice, with 6 appends and 9 breaths. Encoded in Japanese, includes phonemes for easier English and Spanish.

LÍDEM was updated to v2.6 due to the phonemizers unable to work. As well, the Hiragana aliasings were broken. All of these fixes have been urgently applied. It is highly recommended that you re-download the voicebnk.

My Side Order inspired themes for UTAU and OpenUTAU have arrived!
0rder Square is the light version of the theme, while C0ld St0rage is the dark version of the theme. Both feature a color palette with orange-ish colors.

Older Voicebank Releases:

notice

This website is still a WIP. By now, you can click the House icon (top left corner) to go to my main non-UTAU related site. The Home button in the menu takes you back here.If you want to use my UTAU or something, you are very welcome as long as you follow the TOU.

COMMERCIAL USAGE
General Terms of Use:
Section 1: Allowed Behavior
Section 2: Prohibited Behavior
Section 3: Miscellaneous

terms of use

Even if my UTAUs follow some general points across the Terms of Use, some of them have certain differences that are fundamental to be followed. For those specific cases, please read:

Important Notes:

There may be sub-groups or further specifications of these terms inside their own pages.
Some UTAUs have shared ownership, like Ixel, CHROMOID and Elzro. In such case, the ToU linked in their pages take priority.
A notice about the update of the Terms of Use was posted. This notice goes in more detail about the UTAUs this will affect to. Thank you for your understanding.

!! commercial usage !!

Since 19/03/2026, all commercial usage has been prohibited. As of this date, the Terms of Use in the pages of AltEOS and affiliated projects may not be accurate to this notice. PLEASE REFRAIN FROM SELLING COVERS, ORIGINAL SONGS, MERCHANDISE... (etc) WITH THESE UTAUs.Affected UTAUs:

Tranvia-kun, Slice, Captain Papers
MindLess: Glucagon, MEAST, SC-122-Sonia, X-Hitomu, Lykos
Nihilium Wave: AC, Caché Völatta, Heccan, Languore
HaretsuLoids: Megumi Haretsu, Liam Haretsu

Any UTAU outside of this list is bound to the original page of their Terms of Use/shared ownership rules.

section 1 - allowed behavior

Creation of Original Songs and Covers is allowed.
Creation of adult content (gore, drugs, +18) is allowed as long as this content is not protrayed for positive propaganda regarding these topics.
Once distribution is finished, you can upload to services like UTAU Lost Media as long as the correct naming conventions and credit is given.
You can create fanworks (fanart, fansongs, fanfiction, cosplay...) as long as they follow the Terms of Use. This includes drawing the characters in different clothings, shipping and creation of Alternate Universes.

section 2 - prohibited behavior

Creation of Fanloids (derivative voices or designs) is prohibited since the 2nd of February, 2021.
Any content that promotes hatred towards individuals or groups of people, regardless of religion, ideologies, sexualities, etc... is completely prohibited.
Creation of AI related content, such as feeding AI with these artwork, voicebanks, or anything that uses them as source, is prohibited. More details in Section 3 (Miscellaneous).
The re-distribution of source files, may they be edited or under another name, is prohibited.
Using the artwork to trace/plagiarize designs is prohibited. However, using them as a reference is allowed.
Edition of source files (.wav, .png, any kind of asset found in the distribution of the website or voicebank files) is prohibited since 3rd of June, 2025.
Ports to other software. AltEOS does not make themselves responsible for the problems this may cause in any way.

section 3 - miscellaneous

Edition of WAV files is no longer allowed for ports or artificial voicebank creation (formats, languages). Ports to other software is still allowed for personal usage without distribution.
Usage of AI tools like DiffSinger or RVC is prohibited in any way, even if personal usage. The only exception is if AltEOS gives permission themselves.
If you are unsure wether any usage of voicebank or characters falls under any category, please contact AltEOS.
Making monetary profit with the Voicebanks requires a Commercial Usage license.