B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
10%
10% -- tested ideas success rate for Google and Bing A/B testing programs (2026)
At Google and Bing, tested ideas improved their target metrics closer to 10% of the time according to Ronny Kohavi's data.
- The source states the rate was 'closer to 10%' rather than an exact 10%
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
10%
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
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
kirro.io
Primary
Tier B
https://kirro.io/cro-software ↗
Source Article
Best CRO Software in 2026: Tools, Stacks & Buying Guide
CRO software helps you figure out why visitors leave your website without buying, signing up, or doing the thing you want them to do. Then it helps you test changes to fix that.
The category covers everything from A/B testing tools to heatmaps, analytics platforms, surveys, and personalization engin…
Original Research
kirro.io
· Original study ↗
Methodology
Ronny Kohavi data
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google and Bing A/B testing programs: 10% tested ideas success rate. Source: kirro.io (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/google-bing-test-success-10
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<blockquote cite="https://lighthousedata.io/data/google-bing-test-success-10" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>10%</strong> -- tested ideas success rate for Google and Bing A/B testing programs<br><small>Source: kirro.io (2026) · <a href="https://lighthousedata.io/data/google-bing-test-success-10" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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