Kizuna AI was made by a company called Activ8 in 2016. She is part of a project called Project A.I. In 2018, the project was moved to a in-house agency called upd8. In 24 April 2020, the project was moved to a new company called Kizuna AI Inc. At the same time, Nozomi Kasuga, a Japanese voice actress, announced that she was the voice of Kizuna AI. Kasuga is also the advisor of the new company. Kizuna AI Inc. started business on 11 May 2020. The CEO is Eriko Matsumoto.