LaunchDarkly vs Kameleoon

Free tier available

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

LaunchDarkly has dropped per-seat pricing: Developer is free with unlimited seats, and Foundation is pay-as-you-go on service connections and client-side monthly active users with no platform or seat fee. High-traffic consumer products still get expensive, but now through MAU rather than seats. Enterprise is quote-based.

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

Developer plan is free forever with unlimited seats.

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

Category standard

LaunchDarkly · since 2014

Established

Kameleoon · since 2012

• Extremely reliable flag delivery with offline fallbacks — this is infrastructure you can trust in the request path.
• Best-in-class governance: approval workflows, audit logs, role-based access.
• Code references and stale-flag detection actually help you remove dead flags.

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

• Still the expensive option once client-side MAU volume is real, even after the move off per-seat pricing.
• Experimentation is competent but less sophisticated than dedicated statistics platforms.
• Usage-based billing on service connections and MAU is harder to forecast than a seat count.

• 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.

Engineering organisations where flags are critical infrastructure and governance is required.

European enterprises needing both marketer and developer experimentation under GDPR.