The number of advertisers now buying ads on ChatGPT is greater than 60,000, up from more than 20,000 a little more than a month ago. At the current rate of growth, it will be more than 500,000 a year from now. Probably more.

An excerpt from soon-to-be-published "Competing at Machine Speed," a new book by Interpublic alum about what the agentic era portends for modern marketing.

The web spent decades learning how to price human attention. It now has to learn how to price machine utility. That process has begun. The contest over the billable event will decide how much of the open web has a viable place in the machine economy.