OpenAI Switched ChatGPT Ads to CPC Because the Average CTR Hid the Variance
OpenAI launched ChatGPT ads on February 9, 2026 at a $60 CPM with a $200,000 minimum spend. By late April the CPM had collapsed to roughly $25, and OpenAI quietly switched the platform to a $3 to $5 cost-per-click model with a $50,000 minimum. The CPC switch is