Energy costs will be key to deciding which country wins the AI race, Microsoft CEO Satya Nadella has said. As countries race to build AI infrastructure to capitalize on the technology's promise of huge efficiency gains, Nadella told the World Economic Forum (WEF) on Tuesday that "GDP growth in any place will be directly correlated" to the cost of energy in using AI. He pointed to a new global commodity in "tokens" — basic units of processing that are bought by users of AI models, allowing them