B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
68%
68% -- conversion lift for CTAs with social proof (Augmentive case study) (2026)
Adding social proof under the CTA lifted Augmentive's conversion rate by 68%.
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Lighthouse Research Team
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Source verified
Evidence graded
Value
68%
Unit
Percentage
Data Vintage
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
HubSpot
Primary
Tier C
https://foundrycro.com/blog/cta-button-conversion-rate-benchmarks-2026/ ↗
Source Article
CTA Button Conversion Rate Benchmarks 2026 + Free Calculator | Foundry CRO
The short version:
- Single-CTA landing pages convert at 13.5%, two-CTA pages at 11.9%, three-plus CTA pages at 10.5% (Unbounce, 18,639 pages)
- Each extra CTA above one costs roughly $10 per lead in B2B SaaS at $10 CPC; the annualized tax on a 1,000-click-per-month account is $21,000 in wasted spen…
Original Research
HubSpot
· Original study ↗
Methodology
HubSpot case study on Augmentive
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
CTAs with social proof (Augmentive case study): 68% conversion lift. Source: HubSpot (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/social-proof-68-lift-augmentive
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<blockquote cite="https://lighthousedata.io/data/social-proof-68-lift-augmentive" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>68%</strong> -- conversion lift for CTAs with social proof (Augmentive case study)<br><small>Source: HubSpot (2026) · <a href="https://lighthousedata.io/data/social-proof-68-lift-augmentive" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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