The U.S. Commerce Department is looking into whether DeepSeek - the Chinese company whose AI model's performance rocked the tech world - has been using U.S. chips that are not allowed to be shipped to China,

US officials are probing whether Chinese AI startup DeepSeek bought advanced Nvidia Corp. semiconductors through third parties in Singapore, circumventing US restrictions on sales of chips used for artificial intelligence tasks,

Two US lawmakers are urging tighter export controls on Nvidia's AI chips, fearing China's growing AI capabilities. Their concerns stem from reports that a Chinese firm used these chips — currently outside the scope of U.