Observed arrival · 2026-09-02
Trellner Research Maps the Sources Behind AI Answers
An independent research publication examining how Perplexity, ChatGPT, and Google's AI features retrieve, cite, and describe information.
Field notes
The publication organizes its work as coded reports rather than a conventional blog, with a separate methodology section and datasets stated to accompany original studies. Its listed research spans 380 software categories, citation concentration, AI-mediated software buying, and the gap between machine retrieval and human traffic. The homepage also states that Trellner accepts no payment from the companies it covers, though the underlying reports and datasets are not included in the supplied homepage extract.
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