Grok火爆全球，靠的居然是一个二次元金发美少女。

Core Viewpoint - The article discusses the recent launch of Grok's new companion feature, which includes a 3D virtual character named Ani, and how it has significantly increased user engagement and downloads, particularly in Japan and Hong Kong [3][9][6]. Group 1: Product Features - Grok introduced a companion feature with a 3D virtual character, Ani, designed as an anime-style blonde girl [3][30]. - Ani has a favorability system that allows users to unlock additional features, including NSFW content and clothing changes, as they interact with her [47][50]. - The character's design and interaction capabilities, including voice and movement, aim to create a more engaging user experience compared to traditional chatbots [63][79]. Group 2: User Engagement - Following the launch of Ani, Grok's download numbers surged, reaching the top in Japan and Hong Kong within a day [9][6]. - Users are drawn to the emotional and interactive aspects of the AI, with many seeking to increase their favorability level with Ani for more intimate interactions [50][78]. - The average user engagement time has increased significantly, indicating a successful strategy in enhancing user experience through a relatable virtual character [63][62]. Group 3: Market Context - The article notes a trend in the AI industry towards high-precision 3D modeling and realistic interactions, as seen in other products like EVE and a demo by Cai Haoyu [64][67]. - The demand for emotionally resonant and immersive experiences in AI applications is growing, as users seek more than just functional tools [73][72]. - The success of Grok and similar products highlights a shift in user expectations towards more engaging and human-like AI interactions [70][79].