OpenAI ads to start at $60 CPM and $200,000 minimum
It sounds kind of crazy being ~10x the CPM of TikTok but I can actually see it work. They're basically hitting users at the bottom of the funnel so $60 might even be cheap depending on the UI/UX of the ads.
Would probably make sense for them to eventually move to a CPC model like Google since they'd probably make more that way - napkin math of ~5% CTR, $2-5/click for ~$100-150 CPM.

/u/oddsrabbit