A public AI SEO lab
Public experiments in AI SEO.
I test what actually makes AI engines — ChatGPT, Perplexity, Google AI Overviews, Claude — cite a page, and publish every result with the data.
Your page
AI crawlers
- OAI-SearchBot
- PerplexityBot
- Claude-SearchBot
- Google-Extended
In the answer
hzsignal.com
Latest write-ups
All posts- Programmatic test Google indexed us in 3 days. Bing crawled nothing for two weeks. Jul 4
- AI SEO Do AI Overview citations come from the top 10? Every study, reconciled Jul 3
- AI SEO How to see AI Overviews and AI Mode data in Search Console — and what you still can't measure Jul 3
- AI SEO AI search statistics 2026: only the ones that check out Jul 3
- AI SEO The answer engine optimization checklist: every item testable with a free tool Jul 3
- AI SEO How to check if ChatGPT can see your website: 5 tests you can run in 10 minutes Jul 3
The experiments log
Full log| Experiment | Type | Status | Result |
|---|---|---|---|
| Index lag: how fast a new page reaches Google, Bing & Brave | Programmatic | running | Interim (day 14/28): Google 11/16, median 3 days (range 0–12); Bing 0/16 crawled, Brave 0/16 found (confirmed); tracker bug fixed + sitemap registered 2 Jul; H1 untestable this run. |
| Publishing AI SEO experiments in public | Format | running | — |
planned running done
New results, by email
One short email per experiment — the finding and the data, nothing else.