While artificial intelligence (AI) would provide unprecedented impetus to global productivity, the technology could also widen inequalities around the world if not used for the benefit of people, former NITI Aayog CEO Amitabh Kant said on Thursday. "We need a digital public infrastructure (DPI) for AI; the technology must be provided to researchers and startups, used for betterment of society and towards sustainability, and for better inputs for climate research," Kant said in his address at the World Sustainable Development Summit organised by The Energy and Resources Institute (TERI) here. "If this doesn't happen then AI is not fit for purpose," he asserted. The former G20 Sherpa of India also highlighted the immense power requirements of AI -- one of its biggest drawbacks. "AI is an energy guzzler. Today, the technology consumes more energy than the whole of Japan," he said. Research has shown that to train a large language model (which understand and generate human language b