AI Research: Proprietary Metrics and Gemini 4 Hydrogen by Default

In the same week, the benchmarks for AI-assisted research shifted on several fronts. Google rolled out a fundamental update and switched Gemini 4 Hydrogen to the default model for AI mode. OpenAI launched a Business Hub that tracks mentions and clicks from ChatGPT. Meanwhile, Ziff Davis and Tripadvisor warned of weaker organic traffic, and Cloudflare confirmed payments from OpenAI to optimize crawling.

Compare with the right definitions and note two key dates

AI-related search metrics are defined by the platforms that publish them and must be interpreted according to their own criteria. OpenAI's Business Hub counts mentions based on the company's rules, while the comparison cited by Vivek Shah juxtaposes impressions from AI Preview and AI mode, as counted by Google Search Console, against the total clicks from Google Search. Google claims that Gemini 4 Hydrogen connects to a broader range of links but has not disclosed any volume, and Cloudflare acknowledges payments from OpenAI for crawl signals without specifying amounts. In November, two milestones are to be tracked in the logs: the start of the fundamental update and the switch to Hydrogen on November 12. Noting these dates facilitates comparisons before and after these changes, and citation and reference figures can help assess the promise of increased link diversity. Every report should remind for each indicator the definition of the platform that produces it and record the key dates.

Ziff Davis and Tripadvisor report a decline in free traffic

Vivek Shah, CEO of Ziff Davis, does not foresee a recovery in search. He reported a decline of about 37% in organic Google referrals year-over-year in the third quarter and mentioned approximately 2.7 billion impressions from AI Preview and AI mode in Search Console, nearly 10 times the clicks these sites received from Google Search. This comparison does not constitute a click-through rate for AI modules, as Search Console aggregates clicks from these features into the overall total. Organizations with access to the generative AI report can conduct similar analyses using their own data. At Tripadvisor, a goodwill impairment of $369.5 million is primarily linked to headwinds in traffic due to the evolving search landscape. Marketing accounts for 48.8% of ongoing business revenues, up from 43.3% a year earlier, an increase that CFO Mike Noonan attributes to a shift from free channels to paid channels. Both groups are already adjusting their plans to the assumption of reduced organic traffic.

OpenAI launches the Business Hub and allows companies to claim their profile

OpenAI launched the Business Hub in beta on November 10. Any eligible business in a territory where ChatGPT is available can claim its profile and, after identity verification, access Insights displaying aggregated mentions, clicks to the site, and discovery themes over 28 days. A mention is counted only when there is a reference to the company's site; the brand name alone is not sufficient. Vahan Petrosyan reports for Search Engine Journal, 353,356 mentions and 2,663 clicks between October 14 and November 10. Insights count references made by ChatGPT and the clicks resulting from those references, but a recorded click does not equate to a confirmed visit and should be compared with analytics data from the same period. The guide also clarifies that an empty metric does not necessarily mean a lack of activity, and that merely claiming a listing does not lead to increased visibility in responses.

Google selects Gemini 4 Hydrogen as the main model for AI mode

On November 12, Google made Gemini 4 Hydrogen the default model for AI mode and is also using it for certain questions in AI Previews. Robby Stein indicated that this model is used for the most difficult questions in these Previews. Google Search specifies that the model is available to everyone in search and claims a better distribution of queries, linking to a broader range of useful links than before. No link volume has been disclosed, and the notion of "the most difficult questions" has not been defined.

Google launches a global fundamental update in November

Google began the global and multilingual rollout of its fundamental update on November 10, the third of the year. At 10:06 PT on November 10, the launch had just begun and continued through November 12. The Search Status Dashboard mentions a duration of up to two weeks, and the Search Central team describes this batch as a regular update. Google recommends waiting at least a full week after the start of the rollout before comparing Search Console data to that of the previous week. In this case, the first full week includes Thanksgiving, Black Friday, and Cyber Monday, which would lead online merchants following this method to compare a holiday week to a non-holiday week.

OpenAI pays Cloudflare to signal changes in web pages

Matthew Prince indicates that OpenAI pays for signals that notify its bot when web pages change. He cites these payments as an example of early revenue from Act 4 at Cloudflare, without detailing amounts. For clients seeking more traffic from AI agents, he speaks of a new version of SEO and anticipates a form of micropayments, with potentially lower rates for agents that explain their visit. The payments mentioned aim to improve the efficiency of OpenAI's crawling; no revenue sharing with publishers providing these signals has been discussed. Cloudflare clients also have fine control to allow or block each crawler, with AI Crawl Control offered on all plans.