AIGC概念再度活跃，世纪天鸿20%涨停，科大国创等大涨

Group 1 - The AIGC concept saw renewed activity on the 14th, with companies like Century Tianhong hitting a 20% limit up, Keda Guochuang rising over 10%, and others like Tianyu Shuke and Nanxing Stock also reaching limit up, while Zhongke Jincai increased by over 9% [1] - OpenAI announced the upcoming release of its latest AI visual generation model, Sora, which is expected to set a new standard in the video generation field [1] - Since the announcement of Sora, at least ten companies have released or updated their video generation models, indicating a significant impact on the industry [1] Group 2 - The performance of video generation models has significantly improved following Sora's release, with advancements in video duration, resolution, and aspect ratio switching, with some models even surpassing Sora in certain functionalities [1] - In November, Zhipu announced a new iteration of its AI video model "Xinqingying," which enhances video generation capabilities, achieving 10 seconds of duration, 4K resolution, 60 frames per second ultra-high-definition quality, and improved human motion and physical world simulation [1] - Debang Securities believes that the official release of Sora is likely to become a new benchmark in the global video generation field, accelerating the iteration and application of multimodal large models [1]