The official Kimi account posted a string of numbers starting with 415926 on the ZhihuFrontier platform on Sept. 19. This numeric sequence corresponds to the digits of pi after the leading "3.1" is removed, which users identified as a teaser for a new Kimi K3.1 AI model. The post appeared without further explanation from the company.

Moonshot currently lists the K3 model as its flagship AI in official documentation and on its website. While the company has not provided a formal launch date or technical specifications for the 3.1 update, users on social media speculate a release may occur next week based on the cryptic puzzle.