Why am I visible on Google but not mentioned by ChatGPT or Perplexity

Many UK business owners are discovering a frustrating disconnect. Their website ranks well on Google, sometimes on the first page for important commercial terms, yet when they ask ChatGPT or Perplexity for a recommendation in their sector, their business is nowhere to be seen. Understanding why visibility differs across AI platforms explains this gap and reveals what needs to change. This is not a bug or an oversight. Google and AI platforms operate on fundamentally different models of information retrieval and presentation. A strong Google ranking is a positive signal, but it is only one of several factors that AI platforms consider when deciding which businesses to include in a generated answer. ## How Google differs from AI platforms Google ranks individual web pages based on a complex algorithm that weighs factors including content relevance, backlink authority, technical site health, user engagement signals and hundreds of other ranking factors. The output is a list of pages, ordered by calculated relevance. AI platforms such as ChatGPT and Perplexity do not produce ranked lists. They generate synthesised answers drawn from multiple sources. The criteria they use to select which businesses to mention are different from Google's ranking algorithm. ChatGPT, in its standard mode, draws on training data collected from the web up to its knowledge cutoff. In browsing mode, it retrieves live web content but still synthesises rather than ranks. The businesses it mentions are those that appear consistently and clearly across the sources it has access to. Perplexity performs real-time web searches for every query and constructs its answer from the results, citing specific sources. It tends to favour pages that provide direct, structured answers to the query rather than pages optimised for keyword matching. Google AI Overviews use Google's own index but apply a different selection process from traditional organic rankings. A page ranked third organically might be c