Do AI tools cite newer pages more than older ones?

How much newer are pages that AI tools cite?

Newer by a measurable margin, mostly in when they were last updated. Ahrefs found AI-cited pages about 25.7% newer than Google's organic results, and Seer found 75% of cited pages updated within a year.

Ahrefs looked at 16.975 million cited URLs in a study Ryan Law published on July 28, 2025. Cited URLs averaged 1,064 days since publication, against 1,432 days for organic results. Its text and table differ slightly on some figures.

Seer Interactive's study by Sonny Vasquez, published July 24, 2026, is newer and narrower: 47,097 citations from March to June 2026, across four brands in four categories. It kept pages cited three or more times and could date about two-thirds of them, 7,683 pages. Neither study changed a page and watched what happened next.

Is it the publish date or the update date that counts?

In Seer's data, the update date. In a subset of 4,124 pages, 72% looked fresh by their last update, but only 42% had been published within the past year.

More than a quarter of the pages Seer counted as fresh had first been published over two years ago. They were old by birth, recent by edit, and still cited.

Ahrefs measured days since publication, so quoting 75% beside 25.7% as one finding merges two measures. By page type, Seer found only 45% of cited news and editorial pages updated within a year, against 67% for blogs and guides. We read that as publishing habit: a news story usually stays as filed.

Do ChatGPT, Gemini, and Perplexity differ?

Somewhat, and the two studies disagree on which engine leans hardest. Seer's highest share was on Gemini, while Ahrefs found ChatGPT furthest ahead of organic results.

Cited pages updated within a year, per Seer: 78% for Gemini, 73% for ChatGPT, and 65% for Perplexity. Ahrefs reported ChatGPT citing URLs 393 days newer than organic results by one count (references) and 458 days newer by another (citations). Google AI Overviews went the other way, about 16 days older.

One study measured update dates for four brands and the other publish dates for millions of URLs, so we would not crown either engine. Our post on how ChatGPT and AI Overviews pick sources compares them.

Does page age matter more than matching the question?

The match looks like it matters more. Discovered Labs, an AEO services vendor, ranked prompt and content alignment first among the page-level drivers it measured.

Discovered Labs' research on AI citations, last updated August 2026, covers 2 million citations across 10,000 pages and puts that alignment at a standardised coefficient of +0.37. It reports median cited-content age from 5.1 months on Claude to 8.0 months on ChatGPT. That is vendor data, so we read it as one input.

We would fix the match first, because a refreshed page that answers last year's question keeps its problem. Our post on turning customer questions into answers covers finding this year's wording.

None of these studies can answer one question. Pages get updated because someone owns them, and owned pages also tend to be accurate. Is the date doing any of the work, or is it a trace left by the care? We have not found a test that separates the two.

How should you date a page you update?

Change the date when you change the page, show it, and make the structured data agree. A new date on an unchanged page is not what these studies measured.

Google's guidance on publication dates asks for a visible date, matched by datePublished and dateModified in structured data. It says Google weighs several signals to estimate when a page was "published or significantly updated." Our post on schema markup and AI citations covers the markup.

Sitemaps follow the same logic. Barry Schwartz at Search Engine Roundtable reported on July 16, 2026 that Google's Gary Illyes replied on Bluesky that a site with wrong sitemap dates is "probably better off without the lastmods."

Alongside Corvan AI, we run the AI search work for clients, and dating updates this way is part of it. Nobody can promise a citation from a refresh, us included.

Take a pricing page, or a comparison page like the ones in our post on comparison pages. When a number changes, put the new figure in, add a visible "Last updated" line, and let dateModified and the sitemap's lastmod move with it.