B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
2%
2% -- llms txt file adoption rate for websites (2026)
Less than 2% of websites have implemented the llms.txt file.
- Upper bound stated as 'less than 2%'
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
2%
Unit
Percentage
Data Vintage
2026
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
pressfrolic.com
Primary
Tier C
https://pressfrolic.com/ai-search-optimization/llms-txt-file-debate/ ↗
Source Article
llms.txt File: Should Your Website Use It in 2026?
Less than 2% of websites have implemented it — yet the SEO community can’t stop arguing about whether the llms.txt file is the next robots.txt or just digital noise. Proposed in September 2024 by developer Jeremy Howard, this simple Markdown-formatted text file sits quietly at your website’s root an…
Original Research
pressfrolic.com
· Original study ↗
Methodology
Figure is an upper bound ('less than 2%') derived from an analysis of 300,000 domains measuring llms.txt file implementation. The article restates this as '98%+ of domains' not having adopted the file. The original domain analysis is not named in the article.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
websites: 2% llms txt file adoption rate. Source: pressfrolic.com (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/llms-txt-adoption-rate-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/llms-txt-adoption-rate-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>2%</strong> -- llms txt file adoption rate for websites<br><small>Source: pressfrolic.com (2026) · <a href="https://lighthousedata.io/data/llms-txt-adoption-rate-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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