[UPDATE] Open-model share flips a major AI gateway as an enterprise router reports a 56% cost cut
Closed-model tokens fell from about 72% to 38% of Vercel's AI gateway usage over two months while open models rose from 28% to 62%, a shift the scout voice attributes to open-source taking share even as closed-lab absolute volumes grew. Separately AT&T is reported serving 40% of roughly 100,000 employees' AI queries with open models against a 60-70% target, routing Nvidia Nemotron plus Meta and Google open models by task for a 56% coding-cost reduction at a stated 2% quality cost. Reported as a single scout digest item and not independently corroborated here.