OpenAI Says AI Ads Cut Cost Per Customer 15.3% vs Paid Search

OpenAI says WeightWatchers' attributed cost to win a customer with early ChatGPT ads was 15.3% lower than its usual paid-search benchmark, per DV Rockerbox. These are early, partner-measured results chosen by OpenAI. My take: it's not time to shift budgets yet. Three case studies isn't enough, and we need to see more results from independent sources first. Also this week: Utah lets Nolla Health's AI write first-time acne prescriptions without a doctor's appointment, in what Nolla says is a US first. It costs $4.99 a month plus medication. The Very Group, owner of Very and Littlewoods, says letting AI decide what each shopper sees lifted revenue per customer by 20% in one strategy in its first month. Meta's camera glasses face a privacy backlash, as smart-ring maker Oura postpones its IPO. Booking Holdings' CFO says even the AI giants "don't really know" what their return will be. Welcome to Inside the AI Department. Each week I break down the AI rollouts happening inside premium brands, how they impact customers, and which ones are actually making money. TIMESTAMPS: 00:00 Intro 01:01 ChatGPT ads: 15.3% cheaper customers? 03:20 Nolla: Utah's AI acne prescriptions 05:57 Very and Littlewoods: AI personalisation 08:56 AI glasses backlash 11:22 Booking CFO: "don't really know" the ROI 14:15 Outro STORY LINKS ChatGPT ads (OpenAI): https://openai.com/index/new-chatgpt-... Nolla Health, Utah AI acne prescriptions (Utah Department of Commerce): https://commerce.utah.gov/ai/regulato... Very and Littlewoods (The Very Group): https://www.theverygroup.com/media/ne... AI glasses backlash (CNBC): https://www.cnbc.com/2026/10/04/ai-we... Booking Holdings CFO (Fortune): https://fortune.com/2026/10/02/bookin...