Kameleoon is a testing tool.
Optimizely is a marketing suite.
Teams bring in Kameleoon to test and ship winning digital experiences. No longer focused on experimentation, Optimizely tries to do it all.
Kameleoon features Prompt-Based Experimentation (PBX)
Kameleoon pioneered Prompt-Based Experimentation, helping teams build experiments for an agentic world. While Optimizely still relies on a visual editor with AI layered on top, Kameleoon rebuilt experimentation around AI from the ground up.
With PBX 2.0, teams can use AI to ideate, build, configure, analyze, and ship experiments directly into their codebase.
PBX goes beyond editing a single page. It can browse your website, understand existing patterns and components, and reuse them in new experiments so teams move faster without rebuilding what already works.


Kameleoon PBX 2.0 Agents are dedicated to the entire testing process
PBX 2.0 features 5 AI agents each dedicated to a critical part of the experimentation cycle.
Users can Ideate using the power of a 25,000-test library, Build with site-level intelligence, and launch a personalized test in 3 clicks. Analysis is trained to produce reliable takeaways. Users put winning tests into production - in minutes - with PBX Ship (MCP).
Optimizely’s agents are mainly dedicated to “marketing orchestration.”
Kameleoon results reflect real time reality
Kameleoon’s Multi-Stat Engine runs four testing methods, selectable per experiment, with advanced guardrails included by default. Teams don’t pay extra for accuracy.For feature flag teams, speed matters when something goes wrong.
Kameleoon’s Real-Time Streaming pushes updates instantly to web and mobile apps, helping teams react fast, stop exposure, and reduce the risk of broken experiences.That’s what a kill switch should mean: immediate control.
Unlike polling-based systems like Optimizely, changes are applied instantly instead of waiting for the next polling interval.


Kameleoon pricing is simple and predictable
Choose a model based on your average monthly traffic for predictability, or campaign engagement for more control. Either way, Enterprise-level Security, Support, Architecture, and SLAs are included as standard, including PBX Credits.
Optimizely customers consistently report the opposite: a base contract that grows through upsells and Opal Credit “gotchas,” with capabilities that feel like they should be included but aren't.
These brands chose Kameleoon over Optimizely
“To our surprise, Kameleoon beat every one of them.”

“Kameleoon is years ahead of Optimizely”

“We didn’t even look at Optimizely.”
