A new A.I. model, released by a scrappy Chinese upstart, has rocked Silicon Valley and upended several fundamental assumptions about A.I. progress.

Two years on, a new AI model from China has flipped that question: can the US stop Chinese innovation? For a while, Beijing seemed to fumble with its answer to ChatGPT, which is not available in China.

Chinese startup DeepSeek has shaken financial markets by presenting a new artificial intelligence (AI) model. The company from China unexpectedly caused a drop in stocks of Silicon Valley tech companies on Wall Street.