The company built a cheaper, competitive chatbot with fewer high-end computer chips than U.S. behemoths like Google and OpenAI, showing the limits of chip export control.
The popular video app stopped working shortly before a federal law barring U.S. companies from hosting or distributing TikTok was set to take effect on Sunday.
The law that took aim at TikTok over national security concerns has prompted Americans looking for alternatives to download Xiaohongshu, a social media app that is popular in China.