Coinbase CEO Brian Armstrong wrote that "the limiting factor will be energy and compute, not better models." David Dee Delgado/Getty Images for The New York Times Coinbase CEO Brian Armstrong talked about some of Coinbase's strategy for keeping token costs "roughly flat" on X. "We're working hard on routing prompts to cheaper models where appropriate," Armstrong wrote. The post ignited debate over token-saving strategies — and what it means for the big AI labs. Not every AI prompt needs Opus 4