Every week I run AI visibility audits for businesses across different industries. I test how ChatGPT, Perplexity, Gemini, and Claude respond when someone asks about their type of business. The results are almost always surprising to the business owners involved.
Recently I ran the same test across 10 different businesses in different sectors. I kept everything anonymous, but the patterns I found are worth sharing because they apply to almost every business I've ever tested.
How I ran the test
For each business, I asked the same types of questions across three AI platforms: ChatGPT, Perplexity, and Gemini. Questions like "Who are the best [service type] providers in [city]?" and "Which [service type] company should I use for [specific need]?" I documented exactly what came up, whether the business was mentioned, and if so, in what context.
Out of 10 businesses tested, only 2 showed up consistently across all three AI platforms. 4 appeared on one platform but not others. 4 were completely invisible in AI search despite having strong Google rankings.
What the visible businesses had in common
The 2 businesses that showed up consistently across all platforms shared several characteristics. None of them had done GEO intentionally — they had simply done things that happen to align with what AI models trust.
Clear, structured website content
Both businesses had homepages that stated exactly what they do, who they serve, and where they're based. No clever taglines, no vague mission statements. Just clear, specific language that AI could parse and summarize accurately.
Multiple third-party mentions
Both appeared in industry directories, had been featured in at least one publication, and had a consistent presence across review platforms. AI tools had multiple sources to draw from when forming their recommendation.
Active, consistent content
Both had published content regularly — blog posts, case studies, or articles — that directly addressed questions their potential clients were asking. This content gave AI models something to cite.
What the invisible businesses had in common
The 4 businesses that were completely invisible in AI search were not bad businesses. Two of them ranked on the first page of Google for competitive keywords. But they all shared the same structural problems.
Vague website language
Phrases like "we help businesses grow" or "your partner in success" tell AI nothing specific. If an AI model can't clearly state what your business does in one sentence, it won't recommend you.
No schema markup
None of the invisible businesses had structured data on their websites. Schema markup is one of the clearest signals you can give AI about your business type, location, and services. Without it, AI has to guess — and when it guesses, it tends to recommend businesses it's more certain about.
Thin third-party presence
They existed mainly on their own website and maybe a LinkedIn page. AI tools couldn't find corroborating sources to confirm the business was real, active, and credible.
The most interesting finding
The 4 businesses that appeared on one platform but not others revealed something important. Different AI tools trust different sources. ChatGPT tends to draw heavily from its training data and Bing search results. Perplexity indexes the web in real time and cites sources directly. Gemini pulls from Google's index.
A business that had strong Google SEO but no Bing presence showed up on Gemini but not ChatGPT. A business that had been mentioned in a Reddit thread showed up on Perplexity but nowhere else. This is why a proper GEO strategy needs to cover multiple platforms and source types, not just one.
What this means for your business
If you haven't tested your own AI visibility, do it today. Open ChatGPT and Perplexity and ask the questions your potential clients are asking. The results will tell you more about your online presence than any SEO report.
If you're not showing up, the fix is not complicated. It requires structured content, clear entity signals, and a consistent presence across the platforms AI tools trust. Most businesses can make meaningful progress within a few weeks of focused work.
The businesses that move now will be the ones getting recommended six months from now. The ones that wait will still be relying entirely on Google at a time when their clients are already asking AI instead.