Copilot, Microsoft's brand of generative AI technologies, promises to be a big moneymaker for the company, with one analyst predicting that it could generate $10 billion in annualized revenue by 2026. Despite a staggered and somewhat confusing rollout, 40% of companies in the Fortune 100 were testing Copilot by fall, according to Microsoft CEO Satya Nadella. Forrester predicts, meanwhile, that 6.9 million U.S. knowledge workers will be using some form of Copilot in 2024.