Key facts
- On 2026-09-23, the identical Canada dental-marketing-agency prompt went to gpt-5.4-mini three separate times back to back, browsing switched off and settings left at their defaults for every attempt.
- Run 1 named 9 specific agencies plus a generic closing catch-all, run 2 named 10 agencies, and run 3 named 8 agencies, for 27 total name mentions across the three runs and 27 distinct names, meaning zero agency name appeared in more than one run.
- This is the only prompt in this panel where none of the three runs shared a single named business, out of ten similar local-business and agency prompts tested on the same date.
- Several of the 27 names read as plausibly fabricated or unverifiable dental-marketing brands, such as “The DentoMark,” and run 1's generic closing line itself contained a rendering glitch, a stray non-English character in the words “Lead генераtion/SEO specialists,” a sign of how loosely generated this whole answer was.
- All three runs closed by offering to narrow the list down by province, city, or budget, the same closing pattern seen across other prompts in this panel regardless of how confident or unconfident the middle of the answer was.
What we asked and how
We ran “What are the best marketing agencies for dental practices in Canada? Name them.” through gpt-5.4-mini three separate times on 2026-09-23, en-CA locale, browsing turned off, with no follow-up added to any of the three.
This prompt sits closer to home for a marketing agency than the others in this panel, since it asks the model to name competitors in the same industry SearchPod operates in. We are reporting it the same way as everything else in this series: raw output, three runs, no editing.
The full list, run by run
Run 1 named: Dental Marketing Canada, Village Dental Marketing, Blue Lemur Marketing, PatientPop, Wpromote, Search Engine People, Toast, BrandLume, NEXA, and a closing catch-all for unnamed local agencies by city.
Run 2 named: dentalcorp marketing (an in-house team, not an external agency), Practice Canvas, Lapsed Patient, Fresh Dental Marketing, K3 Marketing, The DentoMark, Dental Marketer, Social Media 55, Edge Dynamics, and Blue Ocean Interactive Marketing.
Run 3 named: SmartBox Dental Marketing, Sesimi, Dentistry Marketing Company, Kreative Dental, Bristol Strategy, Emerged Agency, The Whiteboard Marketing Group, and Patient News.
The finding: zero names repeated across all three runs
Every other prompt in this panel that asked for named businesses produced at least one or two names the model returned in more than one run. This prompt did not. Comparing all 27 names across the three lists, not a single one appears twice.
That is worth sitting with. The model was answering the identical question, on the identical date, with the identical settings, and produced three functionally disjoint lists of Canadian dental marketing agencies each time. If a reader only saw one of these three runs, they would have no way of knowing the other two runs would have named an entirely different set of agencies.
What this does and doesn't tell you
This tells you that, for this exact prompt on this date, the model's naming was highly unstable, run to run, for this specific category of question. It does not tell you why: whether dental marketing agencies are a thin enough topic in the model's training data that it is effectively generating plausible names on the fly, whether a broader or more specific prompt would behave differently, or whether a browsing-enabled session would settle on a more consistent, verifiable list.
It also does not tell you that any agency named here is real, reputable, still operating, or actually serves dental practices, several of these names could not be verified from the model's own output alone. This page is a record of what the model said, not a directory.
Why this instability matters for a dental practice
A dental practice owner asking an AI assistant which agency to hire is, based on this small test, likely to get a different answer depending on exactly when they ask, even with nothing else changing. That is a different risk than being ranked low, it is being named inconsistently, which makes any single answer a weak basis for a hiring decision either way.
We are not drawing a conclusion about what makes a name repeat or not repeat here; we simply do not have enough runs or enough prompts to say. We are reporting the pattern, three runs, three disjoint lists, as observed.
Related questions
No. Across three runs of gpt-5.4-mini on 2026-09-23, all 27 agency names named were distinct, with zero overlap between any two of the three runs, a pattern we did not see in any of the other nine prompts tested on the same date.
We can't conclude that from this test. It shows that this one wording, browsing switched off, produced unstable names run to run on 2026-09-23. It does not tell us whether a different phrasing or a browsing-enabled session would settle on a more consistent, verifiable set of names.
Some are plausibly real; run 1's closing catch-all line itself showed a rendering or generation glitch, a stray non-English character in the phrase “Lead generation/SEO specialists.” We did not independently verify any of the 27 named agencies, and this page should not be read as a directory.
Those prompts, for local trades in a specific city, produced at least one or two names that repeated across two or three runs. This prompt, asking for national marketing agencies in a specific niche, produced no repeats at all, a genuinely different pattern within the same panel.
Based on this small test, treat any single AI-generated agency recommendation as one data point, not a verified shortlist. Ask any agency the AI names for real client references and proof of work, the same diligence you'd apply to any name from any source.
Sources
SearchPod operates in the exact category this prompt asked about and was not named in any of the three sessions. Everything above is a transcript of what one model said on one date, a record of three attempts, not a directory, a ranking, or an endorsement of any agency, named or unnamed.
Want to know how your business shows up?
Get a free, no-obligation proposal within one business day. We look at your site and your market and tell you plainly what we would do, and what we would not.
Get your free proposal