B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
30%
30% -- response quality improvement for AI information retrieval (2025)
Schema markup resulted in a 30% improvement in response quality in AI information retrieval via ChatGPT.
- Controlled experiment with a fictional company profile comparing ChatGPT responses for pages with and without schema markup
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
30%
Unit
Percentage
Data Vintage
2025
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
Aiso
Primary
Tier A
https://www.getaiso.com/blog/schema_markup_experiment_blog_post?trk=public_post_comment-text ↗
Source Article
Aiso - Get visible in ChatGPT
Schema Markup vs No Schema: A Real ChatGPT Experiment Reveals Surprising Results
🧪 Experiment Summary
We created two identical websites about a fictional company - one with comprehensive schema markup, one without. Then we asked ChatGPT the same questions about both sites to see if schema markup act…
Original Research
Aiso
· Original study ↗
Methodology
Controlled experiment with two identical websites, one with schema markup and one without, asking ChatGPT the same questions about both sites.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
AI information retrieval: 30% response quality improvement. Source: Aiso (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/aiso_chatgpt_experiment_schema_markup
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<blockquote cite="https://lighthousedata.io/data/aiso_chatgpt_experiment_schema_markup" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>30%</strong> -- response quality improvement for AI information retrieval<br><small>Source: Aiso (2025) · <a href="https://lighthousedata.io/data/aiso_chatgpt_experiment_schema_markup" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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