OpenAI is making a big move to democratize AI access while exploring a new revenue stream. They’ve expanded their ChatGPT Go subscription ($8/month) to the US and worldwide, offering messaging, image creation, file uploads, and memory. But the bigger news? They’re planning to test ads in the free and Go tiers, with Pro, Business, and Enterprise staying ad-free. OpenAI is being upfront about their advertising principles: answers will never be influenced by ads, your conversations stay private from advertisers, and you can turn off personalization or stick with a paid, ad-free option. Initially, ads will appear only at the bottom of relevant answers, clearly labeled and dismissable. They won’t show ads to users under 18 or near sensitive topics like health. Why it matters: This is a pivotal test of whether AI companies can build sustainable, accessible services without compromising the trust that makes these tools useful in the first place.