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llms.txt GeneratorHow long do AI citations last?
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.
The key numbers.
- Median citation lifespan
- Most citations disappear immediately.
- 0 days
- Mean citation lifespan
- Average URL lifespan across the sample.
- 6.8 days
- One-and-done citations
- Citations that appear once and vanish.
- 73.5%
AI citation visibility is highly perishable, requiring continuous monitoring rather than relying on static visibility metrics.
The evidence.
| Measure | Result |
|---|---|
| Median citation lifespan Most citations disappear immediately. | 0 days |
| Mean citation lifespan Average URL lifespan across the sample. | 6.8 days |
| One-and-done citations Citations that appear once and vanish. | 73.5% |
Population and method
Built from 857,138 reports, 108,650 citations, 10,991 brands, and 8 tracked models across a 10-month observation window.
Where the evidence stops
Decay describes observed persistence, not the full causal mechanism behind why a citation disappears.
Brand- and domain-level averages can hide very different retention patterns by query class or model.
Some of the stickiest or most volatile domains come from niche query pockets and should be read as examples, not universal leaders.
What to do with this
- Measure visibility as a moving system instead of a one-time citation snapshot.
- Refresh and monitor citation-driving pages on the cadence your models actually decay.
- Separate durable wins from temporary spikes to avoid overreacting to short-lived mentions.
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.
Questions about this answer.
Cite this answer.
Source study: Citation Decay“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.”
Mack Grenfell · How long do AI citations last?
The Half-Life of AI Citations · Trakkr Research · Updated 30 March 2026