The AI ad generator outperformed me in Blaze.
Blaze is WordPress.com’s internal ad system (Tools > Advertising). I decided to give it a try and ran 2 campaigns. The first was for a random Book post with an AI generated ad, and the second was for one of my best long reads with a hand-crafted ad copy.

The AI-generated one had a $0.3 CPC compared to $0.56 for my post. I also got fewer impressions.
The CPC that I achieved was okay but my blog is not a business, and doesn’t deserve it yet.