The A/B testing platform that runs the program for you
CSS, JavaScript, and redirect variants. Bayesian statistics. AI that catches problems before they cost you a quarter — and explains your wins after. Runs on any website.
Everything the enterprise tools have. None of the enterprise pricing.
Variant types, statistical rigor, AI tooling, multiplatform support — Split Test Pro ships the full experimentation stack so smaller teams can compete with the biggest brands.
CSS, JavaScript & redirect variants
Test anything from a button color to a complete page replacement. Style changes with CSS, content and DOM rewrites with JavaScript, or A/B two entirely different URLs with redirect variants.
AI-powered anomaly detection
Split Test Pro watches every running experiment for sample-ratio mismatches, traffic drops, novelty effects, and trend divergence — surfacing problems before they cost you a quarter.
AI pre-launch QA
Before you go live, our AI reviews your hypothesis, targeting rules, and metrics — flagging setup issues and estimating time-to-significance so you don't waste traffic on broken tests.
Bayesian statistics
Beta-Binomial models for conversion tests, Normal distributions for revenue and engagement. Get probability-to-be-best and credible intervals — not p-values you have to interpret.
Continuous metrics
Move beyond binary conversions. Track revenue per session, AOV, and engagement value — Split Test Pro models them with full distributions, not just averages.
AI results review
When an experiment ends, get a Claude-powered analysis with key findings, a clear recommendation (ship, iterate, or revert), and a projected revenue impact.
From hypothesis to winner in three steps
Build a variant
Write CSS, JavaScript, or set a redirect. Preview the rendered variant via auto-captured screenshots before you launch.
Launch with confidence
Our AI reviews your setup, flags issues, and estimates time-to-significance. Then we split traffic and stream events into the dashboard.
Ship the winner
Probability-to-be-best updates in real time. When the call is clear, our AI summarises the result and projects your revenue impact.
What our customers say
"We were paying five figures a year for our old testing tool. Split Test Pro gave us better stats — actual probability-to-be-best instead of p-value gymnastics — and the AI catches setup mistakes my team used to ship without noticing."
John Harper
Digital Strategist
"The AI results review is the killer feature for me. Every test ends with a clear recommendation and a revenue projection I can actually take to my CEO. We've stopped having 'is this significant yet?' meetings."
Samantha Lee
Marketing Director
"We run experiments across our Shopify store and our standalone landing pages from the same dashboard. JS variants let us test real product changes, not just colors. It feels like having a research team in a tab."
Carlos Mendoza
Lead Product Designer
Pricing that scales with your traffic
Every plan ships the same complete feature set. Pick the tier that fits your monthly experiment traffic.
Starter
For new stores running their first experiments.
Includes up to
10,000 monthly sessions
Growth
For brands testing across multiple pages.
Includes up to
50,000 monthly sessions
Scale
For high-traffic stores with always-on testing.
Includes up to
100,000 monthly sessions
Enterprise
For teams running large programs at scale.
Includes up to
150,000 monthly sessions
Stop guessing. Start measuring.
Sign up free in under a minute. Run your first experiment today — on any website.