Open this photo in gallery: In late January, DeepSeek publicly released a generative AI tool that creates text and code from user prompts, at a quality comparable to American tech companies, but at only a fraction of the production cost.Dado Ruvic/Reuters For the past few years, some of the biggest names in the tech industry have tried to cast a spell on society. “Artificial intelligence is the most transformative technology of all time!” they have cried. “You must give us vast sums of money and all the energy we need, or the economy will be doomed!” And then along came…