The threshold effect in AI authority is crucial:
Citation rates by domain trust tier:
| Domain Trust | Avg AI Citations |
|---|
| 0-43 | 1.6 |
| 44-60 | 2.1 |
| 61-80 | 3.4 |
| 81-96 | 5.6 |
| 97-100 | 8.4 |
Key insight:
Small DA improvements don’t move the needle. You need to break into higher tiers.
Threshold at referring domains:
Sites with 32,000+ referring domains see citations nearly DOUBLE compared to those below.
What this means:
- Incremental link building has diminishing returns
- Focus on breaking authority thresholds
- Big jumps matter more than small gains
Strategy implication:
Either invest heavily to break to next tier, or focus on other factors (content, mentions).