Gachapoid and CV-4Cβ are two of the only voicebanks known named to use VOCALOID-flex. Further voicebanks using the software have not been confirmed. It was also used in part with the game Metal Gear Solid: Peace Walker. It was used for several mecha known as "Gear" within the game, the most notable being "ZEKE", though this was never confirmed to be the name of the voicebank. Ryuto's GachaTalk service ended on February 13, 2015. Parts of Vocaloid-flex were also intended for offer on the Y2 website NetVOCALOID, which was part of the VocaListener project. This lasted until April 28, 2012 when NetVOCALOID was shut down.
The state of this project is unknown, though some say that VOCALOID3 has the capabilities to do speech more easily than VOCALOID2. However, speech itself has since remained absent from VOCALOID and this projects status remains unknown.