Sequential Testing

Sequential testing is now available for Frequentist experiments in LaunchDarkly Experimentation. You can monitor results during the run and stop early when outcomes are clear while maintaining valid statistical guarantees under repeated looks.

What’s new

• Enable sequential testing when creating a Frequentist experiment
• Check results throughout the experiment without invalidating inference
• Stop early when a winner emerges or results are unlikely to change meaningfully

Why it matters
Fixed-horizon tests require choosing a sample size up front and discourage interim reads. Sequential testing supports real-world workflows by allowing teams to make decisions sooner, educing time-to-insight and unnecessary user exposure, without sacrificing rigor.

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