[DEVELOPING] OpenAI reportedly adds PubMatic, Magnite for ChatGPT ads; study finds lower revenue per visit than Google
Investing.com, citing The Information, reported that OpenAI struck unannounced deals with PubMatic and Magnite to sell remnant ChatGPT ad inventory, and both stocks rose about 5% intraday. Separately, a working paper by WU Vienna and Frankfurt School researchers, covered by PPC Land, estimates US ChatGPT ad visits earned $0.89 versus $2.45 for Google search-ad visits, with organic ChatGPT referrals down an estimated 6–8% after ads launched. CNBC's Nov 1 analysis framed the same shift from Google's side: Search revenue grew 12% versus 26% ad growth at Meta. The open question is whether answer-engine ad yields close the gap with search.