How AI engines work

How does Perplexity choose its sources?

Short answer
Perplexity searches the live web for every query, retrieves a shortlist of pages, and cites the ones whose passages most directly answer the question. It favours pages with a clear, extractable answer near the top, recent publication or update dates, and topical focus — a narrow page that answers precisely often beats a broader, higher-authority one.

Perplexity is retrieval-first, which is good news

Because Perplexity searches on every query rather than relying on training memory, its citations respond to changes on the web within days rather than months. A newly published page that answers a question cleanly can be cited almost immediately.

That makes Perplexity the fastest engine to move, and the best early signal that a content change is working. If a change lifts your Perplexity citations and nothing else, it is usually working — the other engines are simply slower.

What gets a page cited

Put the answer in the first hundred words, under a heading that matches the question. Perplexity extracts passages, not pages, so a buried answer loses to a shallow page that leads with one.

Show a date. Undated pages are systematically disadvantaged on any query with a temporal element — and far more queries carry an implicit 'currently' than most publishers assume.

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Last reviewed 2026-07-30.