Data & references
Free to cite, free to link
The things here are meant to be quoted. Original data I collected myself, and references I keep current by hand — each one states what it measures, when it was last checked and how it was made. Take what is useful, cite it with a link, and you never need to ask.
Original data
First-party — I ran these myself and published the method alongside the numbers. Nobody else has this data.
Original data
AI Citation Tracker
Which sources ChatGPT, Gemini and Perplexity actually name — tracked over time.
- Scale
- 3 engines · 1 run
- Updated
- July 12, 2026
- Cadence
- A new run is added each time the queries are re-run
Original data
AI Citability Benchmark
Well-known public pages scored on 11 structural citability signals.
- Scale
- 17 pages · 11 signals
- Updated
- July 15, 2026
- Cadence
- Regenerated when the scorer changes
Hand-verified references
Compiled from primary sources — vendor pricing pages, published crawler docs — and re-checked rather than copied from other roundups.
Reference
GEO Tool Pricing Index
Every GEO / AI-visibility tool, with entry price, engines, trials and seats.
- Scale
- 12 tools · 9 engines
- Updated
- July 16, 2026
- Cadence
- Re-verified against vendor pricing pages
Reference
AI Crawler User-Agent Reference
Every AI crawler token, what it does, and whether blocking it costs you citations.
- Scale
- 15 crawlers · 10 citation-critical
- Updated
- July 18, 2026
- Cadence
- Updated as vendors publish or rename tokens
Free tools
All four run entirely in your browser. No sign-up, no account, nothing uploaded — safe to recommend and safe to link.
AI Citability Scorer
Paste a page, get a 0–100 score on how quotable it is to an AI engine.
AI Crawler Checker
Paste a robots.txt and see which AI crawlers you are actually blocking.
llms.txt Generator
Build a valid llms.txt for your site in one screen.
FAQ Schema Generator
Turn question-and-answer pairs into valid FAQPage JSON-LD.
How to cite any of this
Every page above carries a Cite this page block with a copy-ready citation line and a plain-English description you can paste into your own piece. Everything is published under CC BY 4.0: quote it, chart it, build on it — commercially too — as long as you creditMarco Diversi and link back to the page you took it from.
Writing something and need a figure checked, or a number that isn't here yet? Ask me directly — I would rather you quoted something accurate than guessed.