Content Freshness

TL;DR — AI engines downrank undated content for factual queries because they cannot assess its currency. A clear datePublished and dateModified in both HTML and schema lets the model determine whether the information is current — and for time-sensitive queries, this is decisive.

Why Content Freshness Matters for AI Engines

AI engines downrank undated content for factual queries because they have no way to assess whether the information is current. A page with no visible date could contain information from 2015 or 2024 — the model defaults to treating it as potentially stale, particularly for topics where accuracy degrades over time.

This has direct consequences for citation rates. For queries where currency matters — "how do I configure GPTBot in robots.txt", "what is the current schema markup recommendation", "latest GEO optimisation research" — AI engines explicitly favour pages with recent, visible dates over undated content. The freshness signal is a direct input to citation ranking for time-sensitive queries.

The schema dateModified field is particularly important. A page last modified in 2021 that has not been updated signals that the content has not been maintained. A page with a dateModified from the past 6 months signals active maintenance. For evergreen content (guides, references), the cadence of dateModified updates signals that someone is reviewing and maintaining the accuracy of the information.

How to Implement

• Visible date in the HTML: <time datetime="2025-03-15">March 15, 2025</time>
• Update dateModified whenever you make substantive changes — not cosmetic edits
• Include in Article schema:

"datePublished": "2025-01-01",
"dateModified": "2025-03-15"

• For evergreen content, add "Last updated: date" at the top of the page

Common Mistakes

• Adding a date to schema but not showing it on the page — AI engines cross-check; schema dates without visible HTML dates are treated with lower confidence
• Never updating dateModified even after rewrites — a page completely rewritten in 2025 but showing dateModified: 2022 signals neglect
• Using relative dates — "2 years ago" becomes meaningless to crawlers after time passes; always use absolute dates in <time> elements

Sources

• schema.org/dateModified
• Google Structured Data — Article dates