EY has rolled out an AI router that saves money by sending easy tasks to smaller, less expensive models, and it is already helping teams like tax and risk manage costs better. The router does not work with Microsoft Copilot, but it is significant because most leaders are worried about rising AI expenses: EY found that 82% of senior executives share this concern. Now, companies are tracking usage closely and setting budgets. Diasio sums it up: finding the sweet spot between saving money and boosting productivity is key for smarter, sustainable AI use.