ChatGPT Ad CPMs Fell 58% in Nine Weeks. The Arbitrage Window Is Closing.
OpenAI launched ChatGPT ads on February 9 with a $60 CPM and a $200,000 minimum commitment. Nine weeks later, PPC Land reports CPMs are trading at $25 to $35 per thousand impressions, with some placements as low as $15. The pricing floor is collapsing in preparation for a global