Nvidia shares traded higher in the premarket Tuesday, as traders reassessed the implications of a much cheaper-to-build large-language model for the artificial intelligence trade. The chipmaker's rebound in the early session was shaky,

By Sinéad Carew, Amanda Cooper, Ankur Banerjee NEW YORK/LONDON/SINGAPORE (Reuters) -Global investors dumped tech stocks on Monday as they worried that the emergence of a low-cost Chinese artificial intelligence model would threaten the dominance of AI leaders like Nvidia,

The shocking success of a new model from a mysterious Chinese lab has America questioning its leadership of the sector.

The apparent overnight success of Chinese AI startup DeepSeek caused a shock to the industry, especially the Silicon Valley innovators who have been firmly in the driving seat of this latest tech boom. It also led to a shock for the equity markets, although strategists said it was unlikely to have a long-term impact.

DeepSeek stunned the tech world with the release of its R1 "reasoning" model, matching or exceeding OpenAI's reasoning model for a fraction of the cost.