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llms.txt GeneratorBrand-level AI presence halves in about 31 days
Average brand half-life in the citation decay study is 31 days.
Brand presence decays more slowly than individual URLs, but still quickly.
The numbers behind it.
- Brand half-life
- Average time for brand presence to halve from peak.
- 31 days
The evidence.
| Measure | Result |
|---|---|
| Brand half-life Average time for brand presence to halve from peak. | 31 days |
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
Sustained visibility requires ongoing reinforcement rather than one burst of attention.
Cite this fact.
Source study: Citation Decay“Average brand half-life in the citation decay study is 31 days.”
The Half-Life of AI Citations - Trakkr Research · Brand-level AI presence halves in about 31 days
The Half-Life of AI Citations · Trakkr Research · Updated 30 March 2026