Run A/B experiments with confidence. Caliper gives you two-proportion z-tests, sticky bucketing, live p-values, and SRM detection — all in one lightweight platform built for teams that care about getting it right.
Enterprise-grade statistical tools designed for high-performance product teams who demand accuracy over flashiness.
Utilize rigorous frequentist statistics to compare conversion rates. Our engine handles large sample sizes with extreme precision, ensuring your decisions are backed by hard data.
Consistent user experience across sessions using the high-performance cyrb53 hashing algorithm. No flickering, no bias, just reliable assignment.
Real-time calculations that update as events stream in. Monitor significance thresholds as they approach without waiting for batch jobs to finish.
Sample Ratio Mismatch alerts you immediately if your experiment traffic is unevenly distributed, preventing invalid conclusions before they cost you revenue.
Stop relying on black-box tools. Caliper provides full transparency into the math. Export your data, audit the methodology, and scale with confidence.
Tune your significance thresholds per experiment.
Pre-experiment covariate adjustment for tighter confidence intervals.
Always-valid inference — peek without inflating false positive rates.
Claude Haiku 4.5 on Amazon Bedrock summarises results in plain English.