Patients are asking AI which dentist to trust.
FIDESTIS measures what ChatGPT, Gemini, Claude and Perplexity actually say when someone asks who to see for implants or veneers in your city — and shows you which sources those answers are built from.
Figures from the August 2026 Sydney panel. Your report shows your own city, your own numbers.
How the measurement works
Fig. 1 — Panel procedure
The four assistants don’t read the same sources
One directory was cited 145 times by ChatGPT and never once by Claude, Gemini or Perplexity. Facebook was cited 65 times by Gemini and never by ChatGPT. Checking one assistant tells you about one assistant.
| Source | Total | ChatGPT | Claude | Gemini | Perplexity |
|---|---|---|---|---|---|
| whatclinic.com | 155 | 13 | 44 | 12 | 86 |
| bestinhood.com | 145 | 145 | 0 | 0 | 0 |
| facebook.com | 115 | 0 | 45 | 65 | 5 |
Fig. 2 — Sources cited, Sydney panel, 26–27 August 2026. Three of 796 distinct sources recorded across 384 answers. Individual practice websites are excluded from this sample.
Who runs it
I’m Eugene Naude. FIDESTIS is me — one person who builds and runs the measurement, writes the report, and takes the call.
I built this because the shift to AI-answered search is measurable and almost nobody is measuring it at practice level. Analytics can’t see it: there’s no click to record when an assistant recommends a clinic. So I built the instrument that can.
I work with a small number of practices at a time, in Australia and the UK.
eugene@fidestis.com
The audit
- Your visibility score across all four assistants, with the raw data behind it
- A ranked leaderboard of the clinics competing with you in AI answers
- The citation-source table — the specific sites each assistant drew on
- What the assistants say when a patient asks about your practice by name
- A prioritised 90-day roadmap your web team can execute from
Or ask for the one-page snapshot for your city first — no charge, no obligation.
Most practices start here. If you want the panel re-run monthly and help executing the roadmap, that’s available afterwards — but the audit stands on its own.
Why not just check ChatGPT yourself?
You can, and you should — it takes a minute. What one check can’t tell you is whether that answer is typical, how the other three assistants differ, or which sources produced it.
In this panel, one directory was cited 145 times by ChatGPT and never once by the other three. A single check on a single assistant on a single day is a data point. Forty questions across four assistants is a measurement.
What I don’t claim
No one can guarantee that an AI assistant will recommend a particular practice, and anyone who tells you otherwise is selling something they can’t deliver. What I sell is measurement, a diagnosis of where the answers come from, and a roadmap.
The same panel is re-run on request, so movement is measured rather than asserted — and AI answers do vary between sessions, which is why every figure in your report is tied to a timestamped response you can inspect.