Perplexity Rank is an informal term used by SEO and AEO practitioners to describe a website’s relative prominence within answers generated by the Perplexity AI search engine. Unlike Google PageRank, which is a mathematically defined link-authority score, Perplexity Rank has no official definition and instead refers loosely to how often and how prominently a domain appears as a cited source in Perplexity’s AI-generated responses across a given topic area. Perplexity retrieves sources in real time using its own crawler (PerplexityBot) and a combination of web index partnerships, then passes retrieved passages to a large language model that synthesises an answer and surfaces citations. Factors thought to influence Perplexity Rank include domain authority, content recency, factual density, topical specificity, and whether the content is easily parsed into discrete, quotable claims. Tracking tools emerged in 2024 to help brands monitor their citation share within Perplexity answers.