Kameleoon vs Statsig

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

Free tier available

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

One of the most generous free tiers in developer tooling; paid usage is billed on analytics events, not seats.

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

Generous free tier including unlimited feature flags and a large monthly event allowance.

Established

Kameleoon · since 2012

Widely used

Statsig (Amplitude) · since 2020

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

• Statistics engine is genuinely strong — sequential testing and CUPED are not marketing veneer.
• Flags, experiments and analytics in one system removes a whole class of integration work.
• Warehouse-native mode satisfies data-governance requirements.

• 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.

• Event-based pricing can escalate sharply on high-volume products.
• Broad surface area means a real learning curve.
• Changed hands twice in under a year — OpenAI acqui-hired the founding team in September 2025, and Amplitude took over the product and brand in May 2026, so the roadmap is still settling.

European enterprises needing both marketer and developer experimentation under GDPR.

Product teams that want experimentation and analytics to share one source of truth.