Paul Griggs and the custom AI shaping PwC strategy

Griggs developed the tool about a year ago after a colleague suggested building a bespoke solution rather than relying on generic prompts. The process, which Griggs described as an acceleration of his own discovery, now informs his daily workflow. He keeps two chat systems running simultaneously on his phone and computer, using them to contrast information and stress-test ideas against current market news.

Beyond rapid document review, the CEO uses the assistant to critique his own output. When preparing speeches, he feeds the text into the model with blunt inquiries, asking if his message resonates or simply if the content is ineffective. While he admits he does not track his specific token consumption, he acknowledges the usage volume is significant. This experiment reflects a broader shift among Big Four executives, who are increasingly moving from encouraging AI adoption among staff to integrating custom, high-stakes tools into their own leadership routines.