Advanced Micro Devices Inc.’s Advancing AI 2026 keynote this week was Chief Executive Lisa Su’s bid to redefine the company from a “graphics processing unit alternative” to a full-stack artificial intelligence infrastructure vendor and to make this the year the central processing unit officially rebounds as a first-class AI platform. The message from Su was ambitious and often compelling, but it also sharpened the competitive contrast with Nvidia Corp. and Intel Corp., raising as many questions as it answered.