Optimizely vs Google Analytics 4
Side-by-side from the Top 11 rankings of The 11 Best A/B Testing Tools and The 11 Best CRO Tools for Higher Conversions. Last verified June 13, 2026.
The short answer
Optimizely ranks higher on Top 11 (#1 vs #10) for Growth teams running experiments / Growth and product teams improving website conversion rates. The enterprise standard for its powerful stats engine and full-stack experimentation features.
At a glance
| Optimizely | Google Analytics 4 | |
|---|---|---|
| Top 11 rank | #1 / The 11 Best A/B Testing Tools | #10 / The 11 Best CRO Tools for Higher Conversions |
| Score (out of 9.4) | 9.2 | 7.4 |
| Best for | Enterprise-scale experimentation | Free, integrated A/B testing |
| Pricing | $$$$$ (Custom enterprise plans) | Free |
| HQ | New York, USA | Mountain View, USA |
| Founded | 2009 | 2005 |
Optimizely
The enterprise standard for its powerful stats engine and full-stack experimentation features.
www.optimizely.comGoogle Analytics 4
A free and powerful entry point for teams already using Google's ecosystem.
marketingplatform.google.com/about/analytics/See full entry in The 11 Best CRO Tools for Higher Conversions
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.