AB Tasty vs Optimizely
Head-to-head usage across the sites we track.
Top sites by authority
AB Tasty · Optimizely · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
8
32
Open Page Rank 8+
94
398
Open Page Rank 7+
292
1,140
Open Page Rank 6+
532
1,815
Open Page Rank 5+
828
2,633
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
AB Tasty · Optimizely · share of sites in each country using one or the other
United States
1,851
25,713
Canada
1,357
6,439
United Kingdom
1,657
4,863
India
1,215
5,059
France
1,735
3,449
Australia
850
4,155
Germany
1,401
3,558
Spain
1,407
3,393
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | AB Tasty | Optimizely |
|---|---|---|
| LCP | 2 s | 1.9 s |
| INP | 125 ms | 100 ms |
| CLS | 0 | 0.05 |
| TTFB | 800 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
AB Tasty to Optimizely
| Domain | When |
|---|---|
| homemakers.com | Jul 2026 |
Optimizely to AB Tasty
| Domain | When |
|---|---|
| philosophy.com | Sep 2026 |
| shoecarnival.com | Mar 2026 |