Every fact about a tool or a service on this site comes from a public page and links to it, with the date we checked it. If a vendor does not publish something, we write "not published". We count how often AI assistants name each vendor from our own tracking of 16 buyer questions in ChatGPT, Perplexity and Google AI Overviews.
What we review
We split the market by the kind of work a buyer needs, because the four are often sold under the same label:
| Kind of help | What you get | Where we cover it |
|---|---|---|
| Tracking tool | Software that asks AI assistants a set of prompts and reports where your brand is named or cited | AI visibility tools |
| Audit | A one-off review of where you stand in AI answers and why, with a plan | AI visibility audit |
| Citation work | Getting your brand onto the pages AI assistants cite: lists, reviews, publications, communities | Citation services |
| Full program | Audit, content, placements and tracking run by one firm | Citation services |
Agencies that sell generative engine optimization (GEO) as a full service are ranked in depth on geoagencyreviews.com. Here they appear only where they publish specific citation work.
Where facts come from
- The vendor's own pages: home page, pricing page, product or service page, documentation, case studies.
- Platform documentation from Google, OpenAI, Perplexity and Microsoft for anything about how AI answers pick sources.
- Not used: other review lists, vendor claims about competitors, anonymous reviews, AI-generated summaries.
Each fact is stored with its source URL and check date. Prices are copied as shown, with the billing period. When a price differs between monthly and annual billing, we show both.
How we compare tools
For each tracking tool we record the same fields:
| Field | Why it matters |
|---|---|
| AI engines covered | ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, Claude, Copilot and others answer differently |
| Cited sources shown | Seeing which URLs the assistant cites is what tells you where to get placed |
| Prompts per plan | The real price is the price per tracked prompt |
| Refresh frequency | AI answers change daily; weekly data hides swings |
| Competitor tracking | Share of voice needs competitors in the same prompts |
| Free plan or trial | Lets you check the numbers before paying |
| Export / API | Needed to combine with your own analytics |
| Starting price | From the vendor's pricing page, with date |
We have not run our own side-by-side test of the tools yet. When we do, the prompt set, dates and raw results will be published here.
How we compare services
For each service we record: what they deliver (in their own words), which AI platforms they name, published prices, minimum term, how they measure results (tool and metric), public proof (a named or anonymised case with a figure), and whether they guarantee citations. A guarantee of citations or rankings in AI answers is a warning sign: no vendor controls what an AI assistant cites.
How we count AI mentions
We ask the same 16 buyer questions repeatedly in ChatGPT, Perplexity and Google AI Overviews, for example "Who can help my brand get cited by ChatGPT?" and "How do you measure AI visibility, and what is an AI visibility score?". From 2 to 31 October 2026 that gave 1,424 answers. A vendor's count is the number of those answers that name it.
The count shows which vendors AI assistants already associate with the topic. It is not a quality score: assistants repeat what popular lists say, including lists written by vendors about themselves.
We also record which pages the assistants cite. In October 2026 the same answers carried 12,785 citations; guides and blog posts made up 34% of them, platform documentation 15% and "best" lists 14%.
Updates
- Prices, plans and engine lists: checked monthly; the check date is shown under each page title.
- AI-mention counts: monthly.
- Every change to a list or a price is logged in the changelog.
Corrections
If a fact about your company is wrong or out of date, send the correct value and the public page that shows it via the about page. We correct facts that a public source confirms.