Google pushes Gemini 4 Hydrogen into Search during November core update
Google has rolled out what it calls its biggest model update to Search so far, Gemini 4 Hydrogen, and did so in the middle of a core update. The same window brought a data bug in Search Console's Generative AI performance report, which returned faulty figures between November 9 and 11.
AI-generated images are also returning to AI Overviews for some users, after Google had pulled the feature. Separately, Google published a help document titled Identify Google Search traffic in your web analytics or server logs, giving site owners a way to separate Search-driven visits from other referral traffic.
On the publishing side, the Internet Licensing Collective launched with Yahoo Scout as a route for paying publishers when their content is used in AI answers. OpenAI sent its weekly ChatGPT Ads update email with several changes.
For brands chasing citations in AI answers, the Search Console reporting gap lands at an awkward moment: it covers the same days as the core update and the model change, so any visibility dip or spike in that period is hard to attribute. The new traffic-identification document is the more durable item, since it sets out how to recognise Google Search visits in analytics and logs.
Reported by Search Engine Roundtable ↗
Topics: Google Search, AI Overviews, Measurement