Donald Trump says news of Chinese AI system DeepSeek should be seen as a positive. The U.S. president said it should just spur American tech firms to do better.

DeepSeek's new model poses some serious questions about the assumptions behind AI investments. But what if that's a good thing for Big Tech?

Global technology shares recovered some poise on Tuesday, but remained vulnerable after a rout sparked by the emergence of a low-cost Chinese artificial intelligence model made investors question the sky-high valuation and dominance of AI bellwethers.