How Perplexity is different
Perplexity is an AI search engine that retrieves and cites web sources for nearly every answer, with a typical citation density of five to ten sources per response. It weights freshness more heavily than ChatGPT, runs its own crawler (PerplexityBot), and surfaces inline numbered citations users can click. Perplexity's source weighting favors authoritative editorial sources, structured documentation, and recently updated pages with explicit publication dates.
Perplexity is built around citation. Where ChatGPT can answer without sources for many queries, Perplexity almost always returns inline numbered citations users can click. That makes Perplexity the highest-leverage AI surface for traffic referrals: the citation is not just attributional, it is a clickable link.
The product also rewards different signals than ChatGPT. Freshness matters more. Explicit publication dates matter more. Citation-friendly markup (clear sources, structured pages, visible authorship) matters more. The reverse is also true: brand authority on the open web matters somewhat less, because Perplexity's retrieval layer is younger and weights query-time signals more than learned entity authority.