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llms.txt GeneratorAI citation share by source category
Social is the largest named source category, while 88.40% of citation appearances remain outside the named taxonomy.
Current category mix in the live Trakkr citation index.
The key numbers.
- Reference category share
- Partial hand-maintained source classification.
- 1.48%
- Social category share
- Social is the largest named category, led by YouTube, Reddit, and LinkedIn.
- 6.11%
- Review category share
- Partial hand-maintained source classification.
- 1.11%
- Docs category share
- Partial hand-maintained source classification.
- 0.18%
The ranked view.
Source
AI Citation Index
- 188.40%
Other / unclassified
Most citations land outside the named source buckets.
- 26.11%
Social
The largest named category in the current map.
- 31.48%
Reference
A visible but smaller named category.
- 41.11%
Reviews
A measurable category without an intent-level causal claim.
- 50.18%
Docs
A narrow domain-category result.
What changed
Social is the largest named category
YouTube, Reddit, and LinkedIn lead the mapped social group.
Classification coverage is the main limit
The unclassified majority prevents complete source-type conclusions.
| Measure | Result |
|---|---|
| Reference category share Partial hand-maintained source classification. | 1.48% |
| Social category share Social is the largest named category, led by YouTube, Reddit, and LinkedIn. | 6.11% |
| Review category share Partial hand-maintained source classification. | 1.11% |
| Docs category share Partial hand-maintained source classification. | 0.18% |
| Unclassified share Domains outside the current named source map remain in “other”. | 88.40% |
Population and method
Built from 80,769,585 citation appearances across 725,777 unique domains in the latest valid snapshot for 1,928 tracked brands, observed from October 3, 2025 to October 14, 2026.
Where the evidence stops
The index is a changing panel of tracked brands and prompts, not a random sample of all AI responses.
Domain share is observational. It does not establish causal influence or reveal the full retrieval set.
The hand-maintained source taxonomy is partial: 88.40% of citation appearances remain in “other”.
Model attribution, response-level citation denominators, geography, raw prompts, and raw responses are not retained in the public aggregate.
Cite this tracker.
Source study: Citation Sources“Social is the largest named source category, while 88.40% of citation appearances remain outside the named taxonomy.”
Mack Grenfell · AI citation share by source category
AI Citation Index · Trakkr Research · Updated 14 October 2026