Agencies & Marketing — ChatGPT Ads See Change as OpenAI Expands Reach; AI Performs Well for U.S. Retailers

Agencies & Marketing · 2026-04-17

TODAY'S SIGNAL — The AI advertising ecosystem is maturing faster than most agency playbooks anticipated. ChatGPT ad CPMs have fallen from $60 to as low as $25 in just nine weeks, while OpenAI simultaneously expands ad placements into new markets — a classic supply-expansion price correction that signals the platform is serious about scaling an ad business, not just testing one. Meanwhile, Adobe…