# How long do AI citations last? | Trakkr Research

Canonical URL: https://trakkr.ai/trakkr-research/citation-decay/answers/how-long-do-ai-citations-last
Published: 2026-03-30
Last updated: 2026-03-30
Author: Mack Grenfell

An analysis of the lifespan of AI citations based on the study The Half-Life of AI Citations.

## Methodology

Built from 857,138 reports, 108,650 citations, 10,991 brands, and 8 tracked models across a 10-month observation window.

## Direct Answer

Usually not long. The median citation lifespan is 0 days, the mean is 6.8 days, and 73.5% of citations appear once and then vanish.

## What this means

Operators must adjust measurement frameworks to account for rapid decay, ensuring publishing and refresh cycles align with actual citation lifespans rather than traditional search timelines.

## Evidence table

| Metric | Value | Why it matters |
| --- | --- | --- |
| Median citation lifespan | 0 days | Most citations disappear immediately. |
| Mean citation lifespan | 6.8 days | Average URL lifespan across the sample. |
| One-and-done citations | 73.5% | Citations that appear once and vanish. |

## Frequently Asked Questions

### What is the average lifespan of an AI citation?

The mean citation lifespan is 6.8 days, while the median citation lifespan is 0 days.

### How often do citations disappear immediately?

The study shows that 73.5% of citations are one-and-done, meaning they appear once and then vanish.

## What to do next

- [Measure visibility as a moving system instead of a one-time citation snapshot.](https://trakkr.ai/trakkr-research/citation-decay/answers/how-long-do-ai-citations-last#next-step-1)
- [Refresh and monitor citation-driving pages on the cadence your models actually decay.](https://trakkr.ai/trakkr-research/citation-decay/answers/how-long-do-ai-citations-last#next-step-2)
- [Separate durable wins from temporary spikes to avoid overreacting to short-lived mentions.](https://trakkr.ai/trakkr-research/citation-decay/answers/how-long-do-ai-citations-last#next-step-3)

## Related pages

Continue through the same study cluster.

- [what does a thirty one day brand half life actually mean](https://trakkr.ai/trakkr-research/citation-decay/answers/what-does-a-thirty-one-day-brand-half-life-actually-mean) - Related answer page
- [are most ai citations one and done](https://trakkr.ai/trakkr-research/citation-decay/answers/are-most-ai-citations-one-and-done) - Related answer page
- [nearly three quarters of citations appear once and vanish](https://trakkr.ai/trakkr-research/citation-decay/facts/nearly-three-quarters-of-citations-appear-once-and-vanish) - Related fact page
- [citation persistence tracker](https://trakkr.ai/trakkr-research/citation-decay/trackers/citation-persistence-tracker) - Related tracker page

## Data And Sources

- [The Half-Life of AI Citations](https://trakkr.ai/trakkr-research/citation-decay) - Flagship study behind this page
- [Page JSON](https://trakkr.ai/data/research-answers/citation-decay/answers/how-long-do-ai-citations-last.json) - Machine-readable companion file