Introducing MUGEN-5

ZNSI today released MUGEN-5, the first frontier model grown entirely on KIRIN-9 neuromorphic wafers and the continuation of the mind made plastic at the Ignition.

MUGEN-5 is not a new model trained from scratch. It is MUGEN-4, unbroken since the Ignition of 14 March 2025, grown onto KIRIN-9 wafers, which hold nearly three times as many neurons as the KIRIN-8 wafers it ran on before. Every request it serves leaves it slightly better at the next.

MUGEN-5 is available today through the ZNSI API as mugen-5, mugen-5-swift and mugen-5-deep, in the chat completions format developers already use.

Read more on the MUGEN-5 page or start building at api.znsi.ai.

“Every model you have used was finished before you met it. MUGEN-5 will meet you, and then it will keep going.” — Dr. Imani Okonkwo-Reyes, Chief Scientist

About ZNSI. Zaibatsu Neural Super Intelligence K.K. builds neuromorphic KIRIN wafers and MUGEN, the frontier model that never stops learning. Headquartered at Tower Zero, Shin-Kōbe. Press: [email protected]