B
Evidence Grade B
Graded
under review
Safe to Cite
Recent
15
15 -- sites with llms txt in majestic million for Majestic Million domains (2025-05)
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
15
Unit
Count
Data Vintage
2025-05
Entity
Sample Size
1,000,000
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
quillly.com
Primary
Tier B
https://quillly.com/blogs/llms-txt-explained ↗
Source Article
llms.txt Explained: What It Is and If You Need It
In 2024, a developer named Jeremy Howard proposed a tiny text file that was supposed to fix AI search. Two years later, more than 844,000 websites have added one. There's just one problem: the AI companies it was built for mostly ignore it.
That file is llms.txt. If you run a blog and you've watched…
Original Research
quillly.com
· Original study ↗
Methodology
Crawl of Majestic Million list; grew from 15 sites in Feb 2025 to 105 by May 2025 (600% jump)
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Majestic Million domains: 15 sites with llms txt in majestic million. Source: quillly.com (2025-05). Via Lighthouse Intelligence -- https://lighthousedata.io/data/llms-txt-majestic-million-growth-2025
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<blockquote cite="https://lighthousedata.io/data/llms-txt-majestic-million-growth-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>15</strong> -- sites with llms txt in majestic million for Majestic Million domains<br><small>Source: quillly.com (2025-05) · <a href="https://lighthousedata.io/data/llms-txt-majestic-million-growth-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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