What is the best way to read the null result? | Trakkr Research
Read it as a prioritization signal, not as proof that the file is useless. The best interpretation is that llms.txt is low-cost optional hygiene, not a core citation lever.
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
Mostly, read it as a prioritization signal rather than proof that the file is useless. The best interpretation is that llms.txt is low-cost optional hygiene, not a core citation lever.
What this means
This turns a study finding into an operating rule teams can use when deciding what to publish, refresh, or measure next, preventing wasted engineering cycles on unproven optimization tactics.
Evidence table
| Metric | Value | Why it matters |
|---|---|---|
| Mann-Whitney p-value | 0.85 | No statistically significant citation effect detected. |
| Adoption rate | 13.3% | Domains with llms.txt in the study. |
| Domains scanned | 37,894 | AI-cited domains scanned for llms.txt. |
Frequently Asked Questions
Does the null result mean we should delete our existing llms.txt file?
No, the Mann-Whitney p-value of 0.85 indicates no statistically significant citation effect was detected, but the file remains low-cost optional hygiene.
How many domains are actually using this file?
The study found an adoption rate of 13.3 percent across the 37,894 AI-cited domains scanned.
What to do next
- Treat llms.txt as an optional housekeeping file rather than a primary citation-growth lever.
- Prioritize answer quality, source coverage, and page structure before spending disproportionate effort on llms.txt.
- Measure discovery and crawl behavior directly if you publish llms.txt instead of assuming it improved citation performance.
Related pages
Continue through the same study cluster.
- what should teams do after seeing the llms txt data - Related answer page
- does llms txt look like a sector specific behavior more than a universal standard - 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