Optimizely vs AB Tasty

Quote on request

Quote on request

Enterprise annual contracts, commonly in the tens of thousands and up. Priced by traffic and modules.

Quote-based annual contracts priced by traffic volume.

No free tier.

No free tier; demo on request.

Widely used

Optimizely · since 2010

Established

AB Tasty · since 2009

• The most capable visual editor for non-technical experiment authoring.
• Deep personalisation and audience-targeting features.
• Established statistics with sequential testing, so peeking is handled correctly.

• EU hosting and GDPR posture simplify European procurement.
• Good balance between marketer-friendly editing and server-side flags.
• Strong support reputation in European markets.

• Expensive, with a suite-oriented sales motion that pushes adjacent products.
• Client-side testing causes flicker and is increasingly blocked by browsers and blockers.
• Heavyweight for teams that only need a handful of experiments.

• Less well known outside Europe, with a smaller partner ecosystem.
• Quote-based pricing with no self-serve entry.
• Statistics engine is less differentiated than the warehouse-native platforms.

Large marketing organisations running continuous experimentation on high-traffic sites.

European e-commerce and media companies with GDPR-driven vendor requirements.