How common is llms.txt on AI-cited domains? | Trakkr Research
It is still uncommon. Only 13.3% of the 37,894 scanned AI-cited domains had an llms.txt file.
Methodology: Built from HTTP scans of 37,894 AI-cited domains, linked to 337,362 citations and 882 citation snapshots in the Trakkr corpus.
Direct Answer
It is still uncommon. Only 13.3% of the 37,894 scanned AI-cited domains had an llms.txt file.
What this means
This answer matters because it turns a study finding into an operating rule teams can use when they decide what to publish, refresh, or measure next.
Evidence table
| Metric | Value | Why it matters |
|---|---|---|
| Domains scanned | 37,894 | AI-cited domains scanned for llms.txt. |
| Adoption rate | 13.3% | Domains with llms.txt in the study. |
| Domains with llms.txt | 5,035 | Absolute adoption count. |
Frequently Asked Questions
How common is llms.txt on AI-cited domains?
It is still uncommon. Only 13.3% of the 37,894 scanned AI-cited domains had an llms.txt file.
Which numbers from The llms.txt Effect matter most here?
Domains scanned: 37,894. AI-cited domains scanned for llms.txt. Adoption rate: 13.3%. Domains with llms.txt in the study.
What should a team do next?
Treat llms.txt as an optional housekeeping file, not a primary citation-growth lever. Prioritize answer quality, source coverage, and page structure before spending disproportionate effort on llms.txt. If you do publish llms.txt, measure discovery and crawl behavior directly instead of assuming it improved citation performance.
What to do next
- Treat llms.txt as an optional housekeeping file, not a primary citation-growth lever.
- Prioritize answer quality, source coverage, and page structure before spending disproportionate effort on llms.txt.
- If you do publish llms.txt, measure discovery and crawl behavior directly instead of assuming it improved citation performance.
Related pages
Continue through the same study cluster.
- is llms txt more common on top domains than the long tail - Related answer page
- which industries adopt llms txt most - Related answer page
- median citations are identical with and without llms txt - Related fact page
- llmstxt adoption by sector tracker - Related tracker page
Data & Sources
- The llms.txt Effect - Flagship study behind this page
- Page JSON - Machine-readable companion file