Optimizely vs Contentful
Side-by-side from the Top 11 rankings of The 11 Best A/B Testing Tools (2026) and The 11 Best Headless CMS (2026). Last verified June 13, 2026.
The short answer
Optimizely ranks higher on Top 11 (#1 vs #2) for Growth teams running experiments / Frontend developers building Jamstack and composable sites. The enterprise standard for its powerful stats engine and full-stack experimentation features.
At a glance
| Optimizely | Contentful | |
|---|---|---|
| Top 11 rank | #1 / The 11 Best A/B Testing Tools (2026) | #2 / The 11 Best Headless CMS (2026) |
| Score (out of 9.4) | 9.2 | 9.1 |
| Best for | Enterprise-scale experimentation | Enterprise-grade content operations |
| Pricing | $$$$$ (Custom enterprise plans) | $$$ ($300 to $3000+/mo) |
| HQ | New York, USA | Berlin, Germany |
| Founded | 2009 | 2013 |
Optimizely
The enterprise standard for its powerful stats engine and full-stack experimentation features.
www.optimizely.comContentful
The market leader for secure, scalable enterprise content infrastructure.
www.contentful.comMethodology and scoring weights live at /methodology. No vendor pays for placement — see about.