Why people are switching from Google to Perplexity — and what it means for your brand

Something quietly significant is happening in how people search for information online. Perplexity — the AI-powered search engine that provides direct, cited answers instead of a list of links — has been growing at roughly 40% month-over-month for over a year. It recently surpassed 100 million monthly active users. For context, that is larger than DuckDuckGo ever reached, and the growth curve shows no sign of flattening. The question every business should be asking is not whether Perplexity matters yet, but what happens to your brand visibility when a meaningful percentage of your potential customers stop using Google entirely.

The appeal of Perplexity is straightforward and powerful. When someone asks "What is the best project management tool for a team of 10?" on Google, they get a page of ads, a possible AI Overview, and ten blue links — each of which they need to click, read, evaluate, and compare. When they ask the same question on Perplexity, they get a single, well-structured answer that names specific tools, compares their strengths and weaknesses, cites its sources, and often provides a clear recommendation. The user gets their answer in 15 seconds instead of 15 minutes. For research-heavy queries — product comparisons, "best of" lists, how-to questions, industry analysis — Perplexity is objectively a better experience for the user. And users are noticing.

The implications for brand visibility are profound. In Google's model, you could influence your visibility through SEO: optimise your content, build backlinks, pay for ads, climb the rankings. In Perplexity's model, there are no rankings to climb. There is no page two. There is only the answer — and your brand is either mentioned in it or it is not. The brands that Perplexity cites are determined by the AI model's assessment of authority, relevance, and trustworthiness across the entire web. You cannot buy your way into a Perplexity answer. You can only earn it through genuinely authoritative content and strong external signals.

What makes Perplexity decide to mention one brand over another? The model draws from live web searches and evaluates content based on several factors. Direct relevance to the query is the baseline — your content needs to clearly address the topic. But beyond that, Perplexity heavily weights third-party validation: reviews on authoritative sites, mentions in industry publications, presence in comparison articles, user testimonials on platforms like G2 or Trustpilot. The model also favours content with clear structure, specific data points, and transparent authorship. Vague marketing copy that says "we are the best solution" gets ignored. Detailed content that explains specifically how your product solves a particular problem gets cited.

The businesses most at risk are those that have invested heavily in Google SEO but have not built a broader content and authority strategy. If your entire visibility depends on ranking for keywords on Google, and a growing percentage of your potential customers are getting their answers from Perplexity instead, your traffic will decline even though your Google rankings remain unchanged. You will not see this in your SEO dashboards. You will only see it in gradually declining conversion numbers and the vague sense that fewer people are finding you — because they are finding answers that do not include you.

The actionable response is to monitor your visibility in AI search engines alongside your traditional search rankings. This means regularly checking whether Perplexity mentions your brand for the queries that drive your business, understanding why competitors might be getting cited instead, and optimising your content and external presence for the signals that AI models value. Casa's AEO tool was built specifically for this purpose — it queries Perplexity with your target questions in real time, reports your brand visibility score, identifies citation gaps, and provides recommendations for improving your AI search presence. The shift from Google to AI search is not a future threat. It is a current reality that is accelerating every month. The brands that adapt now will have a compounding advantage over those that wait.