PwC CEO Paul Griggs Uses Custom AI 'PG's Whisperer' All Day

"That, to me, was an acceleration of my own discovery," Griggs said.

He uses the AI to review lengthy documents and pressure-test strategy work, Griggs said. Ideas get tested against what he has seen in the news, he added. Griggs also feeds the assistant material he plans to say or do, including speeches, and asks for feedback. Sometimes the question is straightforward: "Does it suck or does it not?" he said. Other times he asks whether the point he is trying to make is coming through and what to change if it is not.

Griggs declined to name which underlying models he uses. He created PG's Whisperer using two different models, he said. The speed of assessment was "simply not possible before."

Business Insider reported that the rapid pace of business and the need to stay ahead of clients are increasing the pressure on consulting leaders. The publication also said leaders across industries are not just encouraging employees to use AI but are adopting it themselves. The report indicated that Griggs' adoption reflects a shift toward executives personally using AI, not just overseeing its use. Griggs said he does not know his token consumption. "I don't know what my token consumption is, but I can tell you that somebody does, and it would be significant," he said.