The Chinese start-up company DeepSeek recently became the leading artificial intelligence, or AI, app by developing a free version of a popular AI chatbot that goes into something like a human thought process before providing answers to users. That ability has led to DeepSeek quickly becoming the hot U.S. tech stock and has been prompting leading companies, such as Google and Amazon, to respond with similar AI apps. AI experts such as Subbarao Kambhampati, a professor in the School of Computing and Augmented Intelligence, part of the Fulton Schools, are assessing the probabilities for how these new models — despite their advances — could still fall short of accuracy and sound reasoning.