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llms.txt GeneratorNearly half of brands halve within a week
47.1% of brands in the study halve within 7 days of peak presence.
Fast decay is common, not exceptional.
The numbers behind it.
- Brands halved within 7 days
- A large share of brands decay quickly.
- 47.1%
The evidence.
| Measure | Result |
|---|---|
| Brands halved within 7 days A large share of brands decay quickly. | 47.1% |
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
Teams need close-to-real-time monitoring to catch and respond to rapid losses.
Cite this fact.
Source study: Citation Decay“47.1% of brands in the study halve within 7 days of peak presence.”
The Half-Life of AI Citations - Trakkr Research · Nearly half of brands halve within a week
The Half-Life of AI Citations · Trakkr Research · Updated 30 March 2026