The Chinese chatbot took the world by storm and rattled stock markets. But lost in all the attention was a focus on how the company is collecting and storing data.

President Donald Trump is meeting Friday with Nvidia CEO Jensen Huang, whose company designs and supplies the advanced computer chips that play an integral role in developing artificial intelligence.

Last week, a Chinese startup, DeepSeek, released R1, a large-language model rivaling ChatGPT, that is already unraveling the U.S. tech world. The open-source model performs just as well, if not better ...