B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
28%
28% -- ai search coverage lift from schema markup for Pages with comprehensive schema markup vs unmarked controls (2025-2026)
Pages with comprehensive schema markup experience a 28% to 40% AI search coverage lift compared to unmarked controls.
- 40% figure is a ceiling, not an average; realistic expectation is 20-30% uplift with diminishing returns as coverage increases
Attribution:
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Lighthouse Research Team
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Source verified
Evidence graded
Value
28%
Unit
Percentage
Data Vintage
2025-2026
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Search Engine Land / Growth Memo
Primary
Tier C
https://www.getaiso.com/llm-ranking-factors ↗
Source Article
LLM Ranking Factors: What Actually Determines Whether AI Recommends Your Brand
Introduction: The New Battlefield for Visibility
Key takeaways
- There are 12 LLM visibility factors plus one precondition (query-grounding match). Brand authority, freshness, content depth, and schema markup are the highest-leverage four.
- LLMs do not rank in the Google sense. Every factor below i…
Original Research
Search Engine Land / Growth Memo
· Original study ↗
Methodology
Range 28-40% across studies from Search Engine Land and Growth Memo; midpoint 34% extracted; article notes 40% is a ceiling, not an average, with realistic expectation 20-30%
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Pages with comprehensive schema markup vs unmarked controls: 28% ai search coverage lift from schema markup. Source: Search Engine Land / Growth Memo (2025-2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/schema-markup-ai-coverage-lift-2025-2026
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<blockquote cite="https://lighthousedata.io/data/schema-markup-ai-coverage-lift-2025-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>28%</strong> -- ai search coverage lift from schema markup for Pages with comprehensive schema markup vs unmarked controls<br><small>Source: Search Engine Land / Growth Memo (2025-2026) · <a href="https://lighthousedata.io/data/schema-markup-ai-coverage-lift-2025-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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