In this photo illustration, the Deepseek logo seen displayed on a smartphone with the OpenAI - Chat GPT logo in the background. A Chinese-made artificial intelligence (AI) model called DeepSeek has become the most popular app in the Apple Store. According to the news, AI is much cheaper and uses less advanced chips. This news caused Nvidia to lose almost $600 billion (£482 billion) of its market value on Monday, the biggest single-day loss in US history. (Photo by Mateusz Slodkowski / SOPA Images/Sipa USA) *** Strictly for editorial news purposes only *** Source: AAP / Michael Nigro / Mateusz Slodkowski / SOPA Images/Mateusz Slodkowski / SOPA Images/Sipa USA