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NEUTRINO vs CeVIO AI: catalog facts
NEUTRINO	CeVIO AI
Free Free to download, with the project supported by crowdfunding and sponsors.	Paid Voice banks are bought as separate licensed products.
Windows	Windows
Free singing voice synthesis Seventeen voice characters to choose from	AI singing and speech synthesis in one program Range of character voice banks, including third-party voices
Official site is mostly in Japanese Web version is still in alpha testing	Windows only Website and user guide are in Japanese
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.