AI citation share by source category | Trakkr Research
Current category mix in the live Trakkr citation index.
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.
Summary
Social is the largest named source category, while 86.75% of citation appearances remain outside the named taxonomy.
Benchmark rows
| Metric | Value | Context |
|---|---|---|
| Reference category share | 1.98% | Partial hand-maintained source classification. |
| Social category share | 7.20% | Social is the largest named category, led by YouTube, Reddit, and LinkedIn. |
| Review category share | 1.15% | Partial hand-maintained source classification. |
| Docs category share | 0.17% | Partial hand-maintained source classification. |
| Unclassified share | 86.75% | Domains outside the current named source map remain in “other”. |
Ranked view
| Item | Value | Detail |
|---|---|---|
| Other / unclassified | 86.75% | Most citations land outside the named source buckets. |
| Social | 7.20% | The largest named category in the current map. |
| Reference | 1.98% | A visible but smaller named category. |
| Reviews | 1.15% | A measurable category without an intent-level causal claim. |
| Docs | 0.17% | A narrow domain-category result. |
Related pages
Continue through the same study cluster.
- which sources dominate ai citations - Related answer page
- how concentrated is the ai citation landscape - Related answer page
- wikipedia leads the current citation index - Related fact page
Data & Sources
- AI Citation Index - Flagship study behind this page
- Page JSON - Machine-readable companion file