Design statistically valid A/B tests and interpret results for product decisions.
## Workflow: A/B Test Design and Analysis **Input:** Change description, primary metric, baseline, and daily traffic. **Step 1 — Design:** Calculate sample size, duration, and groups. **Step 2 — Guardrails:** Identify secondary metrics to monitor. **Step 3 — Analysis Template:** Provide significance and CI framework. **Output:** A/B test plan with sizing, guardrails, and analysis template.
Free to copy and use. Compatible with Claude 4 Opus, GPT-5, Gemini 2.5 Pro.
Describe the change you want to test, your primary metric, current baseline, and daily traffic for accurate sample sizing.
Initial release
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