马斯克xAI挖走何宜晖：英伟达顶级工程师，西安交大校友

Core Viewpoint - The article discusses the recent hiring of top engineer Ethan He from NVIDIA to xAI, highlighting the growing influence of Chinese talent in Elon Musk's AI initiatives and the significant advancements in AI models like Grok-4 and Cosmos [1][2][15]. Group 1: Ethan He's Career Move - Ethan He, a top engineer from NVIDIA, has officially joined xAI, sparking speculation about his salary and the implications of this move [2][4]. - He previously worked at Meta and was involved in the development of NVIDIA's advanced world model platform, Cosmos, which has been released for commercial use [5][6][8]. - Cosmos is noted for being the first upgraded model with over 100 billion parameters, currently applied in robotics and autonomous driving [10][11]. Group 2: Impact of Grok-4 - Grok-4 has seen a significant increase in downloads by 279% and a 325% rise in total revenue on iOS since its launch, indicating strong market interest and performance [15]. - Ethan He expressed high regard for Grok-4, praising its breakthrough value even before officially leaving NVIDIA [12][14]. Group 3: Growing Chinese Talent in AI - The article highlights a growing number of Chinese scientists and engineers joining Musk's AI team, including notable figures with impressive academic backgrounds from institutions like Stanford and the University of Toronto [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34].