B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
18%
18% -- form completion rate lift for GPT-4-generated whitepaper content (PMG case study) (2025)
Split-testing two versions of a whitepaper differing in language style revealed that GPT-4's data-driven phrasing improved form completion rates by 18%.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
18%
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
PMG
Primary
Tier C
https://anypost.ai/blog/gpt-4-for-b2b-technology-lead-generation ↗
Source Article
GPT
Original Research
PMG
· Original study ↗
Methodology
A/B split test of AI-generated vs human-written whitepaper versions, per PMG case study cited in article
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
GPT-4-generated whitepaper content (PMG case study): 18% form completion rate lift. Source: PMG (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/gpt4-form-completion-lift-18
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<blockquote cite="https://lighthousedata.io/data/gpt4-form-completion-lift-18" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>18%</strong> -- form completion rate lift for GPT-4-generated whitepaper content (PMG case study)<br><small>Source: PMG (2025) · <a href="https://lighthousedata.io/data/gpt4-form-completion-lift-18" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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