The current index tracks more than 2.6 million cited URLs | Trakkr Research
AI systems do not just cite domains. They return to a large but finite set of pages.
Methodology: Built from 48,422,016 citation appearances across 529,165 unique domains in the latest valid snapshot for 1,643 tracked brands, observed from October 3, 2025 to August 18, 2026.
Claim
Trakkr currently tracks 2,602,557 unique cited URLs in the public citation index.
Why it matters
URL breadth distinguishes the size of the observed evidence layer from domain-level concentration.
Supporting metrics
| Metric | Value | Context |
|---|---|---|
| Unique cited URLs | 2.60M | 2,602,557 distinct cited URLs in the current snapshot. |
| Citation appearances | 48.4M | 48,422,016 appearances in the verified August 18, 2026 snapshot. |
Related pages
Continue through the same study cluster.
- how big is the competitive set for ai citations - Related answer page
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- top cited domain tracker - Related tracker page
Data & Sources
- AI Citation Index - Flagship study behind this page
- Page JSON - Machine-readable companion file