行业周报：大厂加速模型升级，继续布局游戏等多模态AI应用-20251221

Investment Rating - The industry investment rating is "Positive" (maintained) [1] Core Insights - Major tech companies are accelerating the upgrade of multimodal AI models, which is expected to enhance content production efficiency and diversity, while also increasing demand for inference computing power [4][30] - The gaming sector is anticipated to maintain high prosperity due to new game launches and ongoing operations of evergreen games, with recommendations to increase investments in this area [4][29] Industry Data Overview - "Delta Operation" ranked first in the iOS game free list in mainland China, while "Honor of Kings" topped the iOS game revenue list [10][14] - The film "Zootopia 2" achieved the highest box office for the week [10][25] Industry News Summary - Major companies are continuously investing in large models, with the domestic gaming market reaching new highs in both scale and user numbers [28] - Google’s Gemini 3 Flash has broken the "performance-cost-speed" Pareto frontier, while domestic giants are increasing resource allocation for continuous iteration of large models [28][29] - The launch of the new Alibaba model supports role-playing functions and is the most comprehensive video generation model globally [29] - Tencent's mixed world model 1.5 allows for the creation of interactive worlds from text or images, enhancing the gaming experience [29] - The Doubao large model has seen a significant increase in daily token processing volume, indicating robust growth in AI applications [31][32]