AI is shifting from chat interfaces to persistent coworkers that handle execution while humans steer strategy and elevate ambition. Tara Seshan, OpenAI's product lead for ChatGPT Work and Codex, reveals how the PM role is transforming: building for model capabilities two to three months out, favoring rapid experimentation over perfect docs, and recognizing that ambition—not execution—is now the bottleneck for companies in the AI era. PMs must build products for AI model capabilities two to three months in the future, not current or one-year capabilities, because both extremes lead to failure.