Online A/B testing of models requires:

Question

Accepted Answer

Proper randomization, sample size planning, and guardrail metrics — A/B needs randomization, power, and guardrails — don't confound with simultaneous UI rewrites.

Answer

No randomization

Answer

Changing both models and UI simultaneously always confounding results

Answer

One day of data always enough regardless of traffic

Online A/B testing of models requires:

Short Explanation and Infographic

Full Explanation