ChatGPT search just started leaning hard on the site: operator
Promptwatch's tracking shows the share of ChatGPT Search queries using the site: operator jumped from ~0.4% to 16-17% overnight, aligned with the GPT-5.6 rollout. The invisible change has real SEO consequences: site owners can suddenly steer generative answers by domain in a way they couldn't before. It also signals a shift toward more restricted, provenance-aware retrieval — the market OpenAI then quietly reduced Reddit sourcing too. For anyone doing "GEO", this is ground truth from outside OpenAI's opaque system prompt.