GrowthBook vs Kameleoon

From $40 per seat/month (cloud Pro, up to 30 users and 3 projects)

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

Seat-based rather than usage-based, so cost tracks the number of people using the platform rather than your traffic — which is why it stays dramatically cheaper than the commercial platforms at scale, especially self-hosted.

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

Self-hosted open source is free with unlimited users on 1 project; the cloud Starter tier is free for up to 3 users.

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

Widely used

GrowthBook · since 2021

Established

Kameleoon · since 2012

• Warehouse-native by design — no duplicate event pipeline and no data leaving your control.
• Self-hosting removes per-user-volume pricing entirely.
• Both Bayesian and frequentist engines with sequential testing support.

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

• Requires a working data warehouse and someone who can define metrics in SQL.
• Self-hosting is operational work you own.
• Less polished governance and approval tooling than LaunchDarkly.

• 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.

Data-mature teams that already have a warehouse and want to avoid volume-based pricing.

European enterprises needing both marketer and developer experimentation under GDPR.