Research & dispatches

What AI engines are actually citing.

Weekly citation-rate reports from the live PressGEO monitor across ChatGPT, Gemini, Perplexity, Claude, Copilot, and Grok — plus the structural playbooks behind the pages that win. Free, dated, and fully sourced.

Methodology

Reports are generated from citation_checks, the live log of every AI-engine probe PressGEO runs. Each probe records the engine, query, whether the engine cited a PressGEO release, the citation position, and the surrounding excerpt. Full per-page methodology lives at /methodology.

Open data

Vendor Citation Share (90d)

How often 150 SaaS vendors across 10 categories are cited by ChatGPT, Perplexity, Gemini, and Claude on real buyer queries. Refreshed hourly. CC BY 4.0 — cite as “PressGEO Vendor Citation Share.”