DeepSeek V4 is undergoing intensive grayscale testing, revealing a three-tiered product architecture with Lite, Expert, and Vision versions. The model shows breakthroughs in architecture and multimodal capabilities. Reports indicate DeepSeek prioritizes domestic AI chips and has sparked a purchasing surge in China, refusing initial testing with US chipmakers. Industry expects V4 to challenge top programming models and feature ultra-long context handling. Its release is imminent this month.