How to keep content fresh so AI engines keep citing it

AI engines have a recency bias for good reason: a page updated last month is more likely to be right than one from 2021. Perplexity and ChatGPT search both surface dates, and several 2026 analyses found pages updated within the last 30 days cited around three times as often as stale ones. There is also a trust cost to staleness that traditional SEO never had: when an engine quotes your old price or your discontinued service, the customer arrives with the wrong expectation and you look careless.

The fix is a system, not a heroic rewrite. Here it is.

Step 1: Inventory your pages by value and age

Export your URLs (from the sitemap or a crawl) into a spreadsheet with: last real update, monthly sessions, whether it is a money page (service, pricing, comparison, key guide), and whether it is currently cited by any engine (from your prompt tracking). Sort by value, then by age. The top 20 to 30 pages are your refresh set. Everything else is a consolidation or pruning candidate.

Step 2: Set a cadence

Money pages: quarterly review, plus an immediate update whenever a price, policy, team member, address or fact changes. Key guides and comparisons: quarterly. Supporting articles: twice a year. Put the dates in a calendar with an owner. Most freshness failures are nobody's job.

Step 3: Know what a real update is

A real update changes what the page says. Examples: new prices and the date they apply from; new figures replacing old ones with the source; screenshots replaced with current ones; a new example or case study; a section added for a question that has started coming up; a correction where a claim is no longer true; removal of a service you no longer offer. A cosmetic update (rewording, new stock photo, date bump) is not, and engines can tell because the facts have not moved.

Step 4: Show the date, honestly

A visible "Published" and "Updated" line near the top, and matching datePublished and dateModified in the page's Article schema. Set dateModified only when Step 3 happened. Disable any plugin that rewrites dateModified on every load. If you use "Last reviewed by [name] on [date]", make sure the review actually happened; readers and engines both treat it as a claim.

Step 5: Update in place, keep the URL

The year-in-the-title trap: "Prices 2025" becomes a new "Prices 2026" page every January and authority is split across five URLs. Instead, keep one URL, update the content and the title, and let the page accumulate history and links. Only change a slug when the topic itself has changed, and redirect the old URL if you do.

Step 6: Consolidate the duplicates

Three blog posts on the same question from 2019, 2021 and 2023 compete with each other and are all stale. Merge the best material into one current page, 301 redirect the others to it, and update internal links. Fewer, stronger, current pages beat a long tail of thin old ones for AI citation.

Step 7: Prune or noindex what cannot be saved

Pages about discontinued services, expired offers, event announcements from years ago, and thin posts with no traffic and no citations should be removed (with a redirect to the nearest relevant page) or set to noindex. Stale content that contradicts your current pages is a source of wrong answers about you.

Step 8: Tell the engines you changed something

Update lastmod in your XML sitemap for changed URLs (most CMSs do this automatically; check). Use IndexNow if your platform supports it so Bing (and therefore ChatGPT search and Copilot) pick up changes quickly. For Google, request indexing in Search Console for the handful of pages that matter most.

Step 9: Log it

Keep a short changelog per money page: date, what changed, who. It stops the same page being "refreshed" cosmetically twice and it is useful evidence when a client or colleague asks what has been done.

How to know it worked

Perplexity shows the new date beside your citation. Prompts that previously cited an older third-party source start citing your updated page. Enquiries stop referencing prices or services you no longer offer.

Common mistakes

• Bumping dates without changing content.
• A new URL every year for the same topic.
• Leaving a 2022 blog post live that contradicts your current pricing page.
• Refreshing the homepage while the pricing page nobody looks at internally is three years old and being quoted.