Resoneo says ChatGPT responses started referencing about 20% fewer web sites after what it identifies because the early-March transition to GPT-5.3 Instantaneous.
The evaluation comes from the French search engine optimisation consultancy and attracts on information from Meteoria, an AI visibility-tracking platform that monitored 400 prompts every day over 14 weeks, producing 27,000 comparable responses.
Common distinctive domains per response dropped from 19 earlier than the transition to fifteen after. Common distinctive URLs per response fell from 24 to 19.
The URLs-per-domain ratio remained at 1 all through the monitoring interval. The info suggests ChatGPT isn’t visiting as many websites per response, however it’s going simply as deep into every one.
Fewer domains now share the identical quotation floor in every response, which means the websites that do get cited take up a bigger share of every reply.
Server Logs Again Up The Sample
Unbiased log evaluation from Jérôme Salomon at Oncrawl helps the findings. Monitoring ChatGPT-Consumer bot exercise throughout a number of web sites, his information reveals crawl quantity has settled at a decrease degree. Some pages aren’t being crawled in any respect anymore, and the crawl frequency for pages nonetheless being visited has dropped.
Resoneo hyperlinks the change to ChatGPT’s default expertise now being pushed extra closely by GPT-5.3 Instantaneous, which the corporate says triggers fewer internet searches and citations than earlier habits. Oncrawl’s server log information reveals the decrease crawl sample over the identical interval.
Earlier information has proven how AI platforms cite sources in another way from conventional search. An SE Rating evaluation of 129,000 domains discovered that referring domains had been the strongest predictor of the chance of ChatGPT quotation, with a threshold impact at 32,000 referring domains.
A Search Atlas report equally confirmed low overlap between Google rankings and ChatGPT citations, with median area overlap round 10-15%.
Why This Issues
A 20% drop in cited domains per response means fewer web sites competing for visibility inside every ChatGPT reply. The full quotation floor shrank, however the websites that stored showing maintained their identical crawl depth.
For anybody monitoring referral visitors from ChatGPT, the early-March mannequin transition is a date vary value checking in your analytics.
Wanting Forward
Resoneo’s evaluation notes that GPT-5.4 Pondering reintroduces search fan-outs and makes use of web site: operators to focus on trusted domains, however these behaviors weren’t captured within the quantitative dataset, which covers GPT-5.3 Instantaneous and beneath.
Whether or not the quotation floor continues to slender or widens once more with newer fashions isn’t but clear.
