AEO Time-Bound Claim Patterns Framework

Time-bound claim patterns combine inline (as of YYYY-MM) markers, dateModified structured data, and explicit "valid through" notes so AI answer engines can confidently extract claims as current. Without recency markers, pricing, statistics, and feature claims decay fast and pages drop out of citation ranks.

TL;DR

Every claim that can change—pricing, market share, feature availability, regulatory thresholds—needs an inline date marker plus a matching dateModified value in structured data. Use (as of YYYY-MM) parentheticals in body text, valid through notes when applicable, and refresh dateModified whenever you touch the underlying claim. Recency-aware engines (Google Search Central, 2024) downweight claims older than the implicit decay horizon for the topic.

Why recency matters for AEO

Answer engines are recency-aware in two ways. First, they rank candidate pages partly by dateModified and dateLastReviewed signals. Second, they downweight extracted claims that look stale relative to the user's query ("current pricing", "latest research"). A page with a 2024 publication date and no in-body date markers will lose to a 2024 page that explicitly says "as of November 2024" on every time-sensitive claim.

The framework has one rule: make the claim's effective date visible at the sentence level, not just at the page level.

The four time-bound markers

Marker 1: Inline (as of YYYY-MM)

The simplest and most extractable marker. Place it immediately after the claim.

Example: GPT-4o pricing is $2.50 per million input tokens (as of 2024-09).

Granularity should match the volatility of the claim: month-level for prices and benchmarks, quarter-level for market data, year-level for regulatory thresholds.

Marker 2: "Last updated" header

A visible "Last updated YYYY-MM-DD" line near the H1 or in the byline. This sets a page-level recency expectation.

Example: Last updated: 2026-05-04. Reviewed by [Author], [credential].

When the body claims have inline markers older than the page-level last-updated, the inconsistency is flagged by both editorial reviewers and AI extractors.

Marker 3: dateModified structured data

The machine-readable equivalent of the last-updated header. Set dateModified whenever any time-sensitive claim is changed; do not bump it on cosmetic edits, since that is a documented anti-pattern.

{
"@context": "https://schema.org",
"@type": "Article",
"datePublished": "2026-05-04",
"dateModified": "2026-05-04"
}

Reference the schema.org Article type and the Google (Google Search Central, 2024) Article structured-data guidelines for canonical property usage.

Marker 4: "Valid through" notes

For claims with a known expiration—promotions, time-limited offers, regulatory effective dates, deprecation notices—add an explicit "valid through" note.

Example: This rate applies to deals signed before 2025-01-01 (valid through 2024-12-31).

Valid-through notes turn an otherwise stale-looking claim into one that engines and readers can confidently classify as still in effect.

Decay horizons by claim type

Not every claim ages at the same rate. Use these horizons as defaults:

Claim type	Default decay horizon	Refresh trigger
Pricing	90 days	Vendor pricing change
API limits and quotas	90 days	Vendor announcement
Market share or research statistics	12 months	New data release
Regulatory thresholds	12 months	Statute or rule update
Product features	90 days	Major release
Best-practice guidance	12-18 months	Field-wide shift
Definitions of stable concepts	24+ months	Discipline-level redefinition

For claims older than the decay horizon, either refresh the data or move the claim into a softened form ("historically X has been Y") with the original date preserved.

Patterns that earn current-date confidence

Pattern 1: Inline marker on every numeric claim

If a sentence contains a number that can change, add an inline (as of YYYY-MM). This is the highest-use pattern and has near-zero authoring cost.

Pattern 2: Visible last-updated, machine-readable dateModified

The two should match. A page that displays Last updated 2026-05-04 but reports dateModified 2024-01-12 to crawlers is sending mixed signals—engines flag the inconsistency.

Pattern 3: Explicit decay disclosure

For research-heavy pages, add a one-line note: "This page is reviewed every 90 days. Methodology and source dates are inline." Trust-aware engines reward predictable refresh cadences.

Pattern 4: Versioned URLs for snapshots

When a claim depends on a specific version ("in API v2"), include the version in the claim and link to the versioned doc. This survives engine re-extraction even when the canonical doc moves.

Pattern 5: Archived link fallback

For especially volatile sources (vendor pricing pages that re-skin frequently), keep an archive link (Wayback Machine or your own snapshot) alongside the live link so the source remains verifiable after the live page changes.

Anti-patterns that age pages prematurely

Published date with no last-modified. Engines treat the page as stuck at publication.
Bumping dateModified on cosmetic edits. Documented anti-pattern; degrades trust over time.
Year-marker titles without supporting body markers. A title like "Best CRM in 2024" with body markers from 2022 is worse than a year-free title.
No source dates for cited statistics. "60% of users" without a (Year) is functionally undated.
Mismatched display and schema dates. The two recency signals must agree.
Stale valid through notes. A "valid through 2023" note in 2026 is worse than no note at all.
Treating evergreen and time-bound claims the same way. Evergreen claims (definitions, well-established techniques) do not need inline markers; time-bound claims always do.

Audit checklist

[ ] Visible "Last updated YYYY-MM-DD" line on the page
[ ] dateModified matches the visible last-updated value
[ ] Inline (as of YYYY-MM) on every pricing, statistical, or feature claim
[ ] Decay horizon assigned per claim type
[ ] valid through notes on offers, promos, and regulatory deadlines
[ ] Year-marker titles only when the page is genuinely year-specific
[ ] Versioned URLs for version-dependent claims
[ ] Archived link fallback for volatile primary sources
[ ] Quarterly or 90-day review cadence published as a policy

FAQ

Q: Should every claim have an (as of) marker?

No. Only time-bound claims need them. Definitions, well-established techniques, and historical facts do not. Adding markers to evergreen claims clutters the page.

Q: How granular should the date marker be?

Month-level for fast-moving claims (pricing, API limits, releases), quarter for market data, year for regulatory thresholds. Day-level granularity is rarely necessary and creates a false-precision feel.

Q: Is bumping dateModified enough on its own?

No. Engines compare display dates, body markers, and dateModified for consistency. Bumping schema without updating body markers is a documented anti-pattern.

Q: How often should I refresh time-bound claims?

Follow the decay horizon table above. For most B2B SaaS pages, a 90-day cadence covers pricing, API limits, and feature claims. Set a calendar reminder.

Q: Should the title include the year?

Only when the page is genuinely about a specific year ("State of AI search 2025"). Year-marker titles on evergreen content cause faster decay than they prevent.

Q: What if I cannot verify an old statistic?

Soften the claim or remove it. "Approximately X% based on 2022 data" is acceptable; "X%" without a year is not. If the data is no longer available, replace it with a current alternative or drop the claim.