Kameleoon vs Optimizely

From $495 per month (PBX Starter: 10 experiments, 50k tested visitors)

Quote on request

Kameleoon now publishes an entry price. Above Starter it is priced by traffic and modules on a custom quote.

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

30-day trial, no card, up to 3 experiments.

No free tier.

Established

Kameleoon · since 2012

Widely used

Optimizely · since 2010

• Genuinely good hybrid model — the same experiment can run client- and server-side.
• Effective anti-flicker implementation.
• EU hosting with healthcare-grade compliance options.

• 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.

• Smaller market presence outside Europe.
• Only the entry tier is priced publicly; everything above it is a sales conversation.
• Fewer third-party integrations than Optimizely.

• 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.

European enterprises needing both marketer and developer experimentation under GDPR.

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