B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
23%
23% -- citation lift for sites with well-structured llms.txt (2026-05)
Sites with well-structured llms.txt measured approximately a 23% citation lift versus matched controls.
- Lift may be correlational rather than causal
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
23%
Unit
Percentage
Data Vintage
2026-05
Entity
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Princeton
Primary
Tier A
https://alicelabs.ai/en/insights/ai-crawlability-consulting ↗
Source Article
AI Crawlability Consulting: Get Discovered by ChatGPT & Copilot
Original Research
Princeton
· Original study ↗
Methodology
Princeton GEO-bench matched-control study
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
sites with well-structured llms.txt: 23% citation lift. Source: Princeton (2026-05). Via Lighthouse Intelligence -- https://lighthousedata.io/data/geobench-llmstxt-citation-lift-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/geobench-llmstxt-citation-lift-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>23%</strong> -- citation lift for sites with well-structured llms.txt<br><small>Source: Princeton (2026-05) · <a href="https://lighthousedata.io/data/geobench-llmstxt-citation-lift-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
Share
Related Statistics
Use this data in your work
Copy the citation, embed the widget, or explore thousands more verified marketing statistics -- all free.