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Testing · head to head

Kameleoon vs Optimizely

Kameleoon logo

Kameleoon

Testing

A/B testing and feature experimentation with a hybrid client and server-side engine

From
On request
Rated
-
Full reviewWebsite
Optimizely logo

Optimizely

Marketing

Digital experience optimization

From
$10000/year
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Kameleoon no rate card is published. Reported entry pricing around several hundred euros a month for the limited prompt-based tier comes from third parties rather than Kameleoon, so any budget you build before contacting sales is a guess.; Optimizely no pricing is published and no minimum is stated
  • They diverge on capability: Kameleoon covers Visual A/B test editor, Optimizely covers A/B testing.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Kameleoon and Optimizely actually diverge.

Attributes where Kameleoon and Optimizely differ
AttributeKameleoonOptimizely
Starting priceOn request$10000/year
PlatformsWeb, iOS, AndroidWeb, Mobile
CategoryTestingMarketing
FoundedUnknown2010

Identical on both: pricing model (quote), free tier (No), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Kameleoon

  • Visual A/B test editor
  • Server-side experimentation
  • Feature flags
  • Anti-flicker engine
  • AI personalisation
  • EU data hosting
  • Shared audiences
  • Statistics options

Only in Optimizely

  • A/B testing
  • Multivariate testing
  • Personalization
  • Feature management
  • Analytics
  • Google Analytics
  • Adobe Analytics
  • SOC2

What people use each for

The jobs each tool is most often brought in to do.

Kameleoon

  • A European retailer whose legal team requires EU-hosted experimentation data and has ruled out US-only vendorsnot Optimizely
  • A team running both marketing page tests and product feature rollouts that wants one results engine rather than two disagreeing onesnot Optimizely
  • A media site where client-side flicker on a test variant is visibly damaging the reading experiencenot Optimizely
  • An organisation re-tendering experimentation after Optimizely or VWO pricing changes and wanting an independent European vendornot Optimizely

Optimizely

  • A/B testing and experimentation across web and product experiencesnot Kameleoon
  • Feature flagging and personalisation for digital productsnot Kameleoon

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Kameleoon

  • No rate card is published. Reported entry pricing around several hundred euros a month for the limited prompt-based tier comes from third parties rather than Kameleoon, so any budget you build before contacting sales is a guess.
  • Web experimentation, feature experimentation and personalisation are licensed as separate capabilities, so the unified platform story costs materially more than the entry configuration most buyers are first quoted.
  • The partner and agency ecosystem is concentrated in France and continental Europe; a buyer in North America or Asia will find fewer implementation specialists and less community knowledge than for Optimizely or VWO.
  • The integration catalogue is smaller than the market leaders, so a stack built on less common analytics or CDP tooling may need custom work that a larger vendor would cover natively.
  • Client-side visual testing still carries the structural problems of the approach, including performance cost and single-page-application fragility; the anti-flicker engine reduces the symptom but does not remove the dependency on the DOM staying stable.

Optimizely

  • No pricing is published and no minimum is stated
  • Every plan is individually packaged, so no two quotes are necessarily comparable
  • Reaching a figure requires a demo or sales conversation

Pricing, plan by plan

Kameleoon

On request
  • Kameleoon$undefined/year
    • Priced on monthly tested users and features licensed
    • Web experimentation, feature experimentation and personalisation licensed separately
    • Free trial of the prompt-based experimentation feature, with data not retained afterwards

Optimizely

$10000/year
  • Enterprise$undefined/year
    • A/B testing
    • Personalization
    • Feature management

Which should you pick?

Choose Kameleoon if

  • You need visual a/b test editor.
  • You work on Web, iOS, Android.
  • You also want server-side experimentation.
Kameleoon review

Choose Optimizely if

  • You need a/b testing.
  • You work on Web, Mobile.
  • You also want multivariate testing.
Optimizely review

Questions people ask

Is Kameleoon or Optimizely better?
Neither clearly leads. Kameleoon starts at On request and Optimizely at $10000/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kameleoon or Optimizely?
Kameleoon starts at On request and Optimizely at $10000/year.
Does Kameleoon or Optimizely run on more platforms?
Kameleoon runs on Web, iOS, Android. Optimizely runs on Web, Mobile.
What is Kameleoon best used for?
Kameleoon is most often used for a european retailer whose legal team requires eu-hosted experimentation data and has ruled out us-only vendors, a team running both marketing page tests and product feature rollouts that wants one results engine rather than two disagreeing ones, a media site where client-side flicker on a test variant is visibly damaging the reading experience, an organisation re-tendering experimentation after optimizely or vwo pricing changes and wanting an independent european vendor. Of those, a european retailer whose legal team requires eu-hosted experimentation data and has ruled out us-only vendors and a team running both marketing page tests and product feature rollouts that wants one results engine rather than two disagreeing ones are not what Optimizely is typically brought in for.
What can Kameleoon do that Optimizely cannot?
Kameleoon covers Visual A/B test editor, Server-side experimentation, Feature flags, Anti-flicker engine. Optimizely covers A/B testing, Multivariate testing, Personalization, Feature management.

Answered from the vendors’ own pages

Kameleoon: Does Kameleoon publish pricing?

No. Pricing depends on monthly tested users and which capabilities you licence, and requires a sales conversation.

Optimizely: How much does Optimizely cost?

Optimizely does not publish pricing rates. The company states that every plan is individually packaged based on specific customer needs. Interested customers must request a demo or contact the sales team to receive customized pricing.

Source
Kameleoon: Can I keep data in the EU?

Yes. EU hosting and a GDPR-first consent model are among the main reasons European buyers shortlist it.

Optimizely: What is the pricing model for Optimizely?

Optimizely uses a custom enterprise pricing model rather than published rate cards. Pricing is determined through direct consultation with the sales team based on the customer's digital needs and feature requirements.

Source
Kameleoon: Does it do feature flags as well as A/B tests?

Yes, through server-side SDKs, sharing audiences and results with the visual testing side.

Optimizely: Is there a free trial of Optimizely?

Optimizely does not specify free trial availability on its website. Customers interested in exploring the platform are directed to request a demo through the company's website to discuss trial options.

Source
Kameleoon: How does it compare with Optimizely?

Similar capability at a smaller scale. Kameleoon's advantages are European data residency and an independent vendor; Optimizely's are ecosystem size and partner availability.

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