AI provider

rinna

rinna is a Japanese AI developer that took over Microsoft's Rinna chatbot business in 2020. It later published Japanese language, image-generation and image-text models.

Company & leadership

Founding leadership
Zhan “Cliff” Chen was the representative director named at launch. The announcement does not provide a complete founder roster.
Last verified chief executive
Joohoun Song was identified as CEO in a July 2024 post by company executive Alex Lagata. This review could not confirm current tenure.
Published office
WeWork Shibuya Scramble Square, Shibuya, Tokyo, Japan. The location is documented in the company launch and an executive interview.
Ownership information
The 2020 announcement describes separation from Microsoft. Current shareholders and control were not verified.

Models & tools