海外明星公司被曝套壳中国开源模型，负责人出面致歉

Core Viewpoint - The article discusses the controversy surrounding Cursor's new model Composer 2, which is alleged to be based on the Chinese open-source model Kimi K2.5, raising questions about licensing and attribution in the AI industry [1][3]. Group 1: Event Background - Cursor, a U.S. programming company, released Composer 2, claiming it was developed through self-research without mentioning its foundational model [3]. - A developer discovered that Composer 2 is based on Kimi K2.5, which is confirmed by Kimi's pre-training lead [5]. - The controversy stems from Kimi K2.5's open-source license, which requires commercial products using it to credit the model if they exceed 100 million monthly active users or $20 million in monthly revenue [8]. Group 2: Industry Reactions - Under pressure, Cursor's team acknowledged the oversight in not crediting Kimi K2.5 and stated that only a quarter of the model's calculations were derived from the foundational model [8]. - Cursor's founder praised Kimi 2.5 as a strong model, indicating that it was the best among many evaluated [8]. - Kimi.ai congratulated Cursor on the release of Composer 2, emphasizing the importance of open model ecosystems [9]. Group 3: Market Implications - The incident highlights the growing role of Chinese open-source models in the global AI landscape, with domestic models surpassing U.S. models in usage for two consecutive weeks [9]. - An industry expert noted that the reliance on Kimi K2.5 by Cursor underscores the competitive advantage of open-source models and suggests that the future of AI development will focus on adaptation and productization rather than starting from scratch [9].