B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
10.13%
10.13% -- llms txt adoption rate for domains studied (llms.txt adoption) (2025)
A 2025 study of nearly 300,000 domains found that 10.13% used llms.txt.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
10.13%
Unit
Percentage
Data Vintage
2025
Entity
Sample Size
300,000
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
seovendor.co
Primary
Tier B
https://seovendor.co/llms-txt-in-chrome-lighthouse-a-new-technical-seo-signal/ ↗
Source Article
llms.txt in Chrome Lighthouse: A New Technical SEO Signal
Search teams now see llms.txt checks inside Chrome Lighthouse audits. That new flag makes machine access rules part of day-to-day tech SEO checks across sites and teams. In addition, you should also know how llms.txt differs from robots.txt. Lighthouse can flag bugs.
Table of Contents
Those bugs can…
Original Research
seovendor.co
· Original study ↗
Methodology
Study of nearly 300,000 domains
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
domains studied (llms.txt adoption): 10.13% llms txt adoption rate. Source: seovendor.co (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/llms-txt-adoption-2025-study
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<blockquote cite="https://lighthousedata.io/data/llms-txt-adoption-2025-study" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>10.13%</strong> -- llms txt adoption rate for domains studied (llms.txt adoption)<br><small>Source: seovendor.co (2025) · <a href="https://lighthousedata.io/data/llms-txt-adoption-2025-study" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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