Glossary · Platforms
Perplexity Source Ranking
The process by which Perplexity selects and orders the web sources it cites when answering a query.
How it works
Perplexity runs a retrieval step across its search index, ranks candidate pages by relevance, authority, and freshness signals, then generates an answer that cites a subset of those sources as numbered footnotes. Perplexity has described weighting factors like content quality, source diversity, and recency, though the full ranking algorithm isn't public.
What that means for a cited page
Because citations are numbered and visible, position matters: a source cited first or referenced multiple times across an answer is a stronger visibility signal than one buried at the end of a long footnote list.
Why it matters for tracking
Because Perplexity shows its citations explicitly and prominently, source ranking is one of the most directly observable forms of AI visibility — you can see which domains got cited for a given query and in what order. That transparency is a big part of why Perplexity is a common benchmark for AI-visibility tools, compared to engines with less visible sourcing.
See more terms in the full glossary, or read the AI Visibility 101 guide for the full picture.