US President Donald Trump has called Chinese AI start-up DeepSeek's strong showing a "wake-up call" and "positive" for America's tech sector, and also warned that he would slap tariffs on foreign-made semiconductor chips,

People across China have taken to social media to hail the success of its homegrown tech startup DeepSeek and its founder, after the company unveiled its newest artificial intelligence model, sending shock waves through Silicon Valley and Wall Street.

DeepSeek, a Chinese startup that's throwing tech valuations into chaos and challenging U.S. dominance in the field. Its creators claim it can do what U.S. models do but at a fraction of the cost. Steve DiPaola,