China’s DeepSeek previews new AI model a year after jolting US rivals 

Chinese AI company DeepSeek released a preview of its new V4 model, which is open-source (publicly available code that anyone can use and modify) and claims to match the performance of closed-source (proprietary, not publicly available) AI systems from US companies like OpenAI and Google. The V4 model shows major improvements in coding tasks, which are important for AI agents (AI systems that can take actions independently), and works well with Chinese chip technology from Huawei.