Zendesk leads this HIPAA-compliance buying question on reach, appearing in 100% of answers across all three models, but the slot is contested and no brand has locked it down.
Zendesk's perfect 100% mention rate and consistent presence across ChatGPT, Gemini, and Perplexity gives it the broadest footprint, yet its average position of 4 keeps its slot score at 73, not dominant enough to own the slot outright. Comm100 and OneDesk both score 65 and show up in 75% of answers, with Comm100 earning repeated first-position placements in ChatGPT responses specifically because the answers cite its architecture being built for regulated industries rather than retrofitted for compliance. The contested status means a challenger with strong HIPAA-specific positioning and consistent early placement across all three models could realistically pull share, since no single brand controls even half the position-weighted weight in this question.
AI-generated analysis of the July 2026 measurements.
Every brand recommended for this question, from 12 answers across ChatGPT, Perplexity, and Gemini.
| # | Brand | Slot score | Appears in | Avg. position |
|---|---|---|---|---|
| 1 | | 100% | #4 | |
| 2 | Comm100 | 75% | #3 | |
| 3 | OneDesk | 75% | #3 | |
| 4 | Giva | 75% | #6 | |
| 5 | | 67% | #6 | |
| 6 | HappyFox | 42% | #5 | |
| 7 | | 42% | #6 | |
| 8 | | 42% | #6 |
Slot score is position-weighted, 0 to 100: being recommended first counts far more than a trailing mention. "Appears in" is the share of answers naming the brand at all.
The main measurement above is the assistants' real answers with live web access. These rows show the same question on other surfaces: the models' bare memory, and Google's own AI search experiences.
ChatGPT, Perplexity, and Gemini each answered this question in two phrasings, several times each, with live web access and citations: the closest API-reachable version of the real assistant experience (no personalization or account memory, which no vendor can provide). Model-memory answers (no web) are measured separately and shown above as a comparison surface. A brand counts once per answer that recommends it. The exact questions:
Part of the Customer Support ranking. Method details on the methodology page. Rankings reflect measured AI answers, not paid placement.
Who wins when the question changes:
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