Statsig vs Kameleoon

Free tier available

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

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

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

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

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

Widely used

Statsig (Amplitude) · since 2020

Established

Kameleoon · since 2012

• 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.

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

• 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.

• 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.

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

European enterprises needing both marketer and developer experimentation under GDPR.