# The Half-Life of AI Citations | Trakkr Research Canonical URL: https://trakkr.ai/trakkr-research/citation-decay/answers Published: 2026-03-30 Last updated: 2026-03-30 Author: Mack Grenfell How quickly citations vanish, which models retain them longer, and which domains stick. Answer pages, reference facts, and live trackers drawn from this study. ## Methodology Derived from The Half-Life of AI Citations and updated March 30, 2026. ## What this hub contains How quickly citations vanish, which models retain them longer, and which domains stick. Answer pages, reference facts, and live trackers drawn from this study. ## Answer Pages Narrow questions answered directly from the study. - How long do AI citations last? - An analysis of the lifespan of AI citations based on the study The Half-Life of AI Citations. - What does a 31-day brand half-life actually mean? - It means brand-level AI presence tends to halve from its peak within about a month. The study’s average brand half-life is 31 days. - Are most AI citations one and done? - Yes. 73.5% of citation URLs in the study appear once and never return. - How many brands have truly stable AI visibility? - Very few. Only 13.2% of brands in the stability analysis qualify as very stable. - How fast can AI visibility drop after a peak? - Very fast. 47.1% of brands halve within 7 days, and average weekly mention change reaches 51.8% in the study. - Is AI visibility more volatile than traditional search rankings? - Yes in practice. The decay benchmark shows immediate URL churn, a 31-day brand half-life, and large day-to-day movement, all of which point to a much more fluid surface than classic static rankings. - What is the right refresh cadence if citations decay this fast? - The cadence has to be tighter than most editorial calendars assume. When the median citation lasts 0 days and the average brand half-life is 31 days, quarterly reaction loops are too slow. - Does a citation win mean you have a durable position? - Usually no. A one-time citation win is often ephemeral because most citations vanish quickly and only 6.8% are still active at the end of the observation window. - What is the most important metric in the decay study? - The combination of one-and-done rate and brand half-life is the clearest operating pair. Together they show how weak URL persistence can still translate into a slower but real brand-level decay curve. - Why should brands monitor AI visibility continuously? - Because the underlying citation layer is highly unstable. Fast URL churn and steep brand-level decay mean snapshot reporting can miss both losses and recovery windows. - What does the decay data say about brand resilience? - It says resilience is rare and earned. Only 13.2% of brands qualify as very stable, while the majority experience moderate to high volatility. - How should teams interpret short-lived citation spikes? - Interpret them cautiously. A spike can be real and still fail to persist because most citations are one-and-done and the median URL lifespan is 0 days. ## Reference Facts Short, quotable claims with metrics and methodology context. - Nearly three quarters of citations appear once and vanish - An analysis of 108,650 distinct citation URLs tracked longitudinally in The Half-Life of AI Citations study reveals the volatility of AI generated references. - The median citation lifespan is 0 days - In The Half-Life of AI Citations study, researchers analyzed the persistence of AI-generated citations and found that the majority disappear immediately upon subsequent queries. - The average citation lifespan is only 6.8 days - The Half-Life of AI Citations study evaluated the longevity of source links by measuring the average URL lifespan across a sample dataset. - Brand-level AI presence halves in about 31 days - Brand presence decays more slowly than individual URLs, but still quickly. - Nearly half of brands halve within a week - Fast decay is common, not exceptional. - Only 13.2% of brands are very stable - An analysis of brand stability within AI citations reveals that a small minority of brands maintain consistent visibility over time. - Only 6.8% of citations are still active at the end of the window - Persistence is the exception rather than the rule. - Weekly mention change exceeds 50% in the benchmark - The surface is highly dynamic week to week. ## Trackers Live benchmark views built from the study’s most reusable dimensions. - Citation persistence benchmark - Research tracker page for The Half-Life of AI Citations study, focusing on the Citation persistence benchmark. - Visibility stability by brand cohort - Research tracker page for Trakkr detailing the study The Half-Life of AI Citations, focusing on visibility stability by brand cohort. ## Data And Sources - [The Half-Life of AI Citations](https://trakkr.ai/trakkr-research/citation-decay) - Flagship source study - [Hub JSON](https://trakkr.ai/data/research-answers/citation-decay/hub.json) - Machine-readable hub payload