YouTube is rolling out title A/B testing globally to all creators with access to advanced features, expanding the testing capability beyond the select group that had early access. The announcement came via the platform’s Creator Insider channel, clarifying how the feature works and addressing common questions from creators. Title A/B testing joins thumbnail testing in YouTube’s “Test and Compare” tool. You can test up to three titles, three thumbnails, or combinations of both on a single video. How Title A/B Testing Works The A/B testing tool compares performance across experiment variations over a set period of up to two weeks. After testing concludes, YouTube notifies creators of the results. If there’s a clear winner, that option becomes the default shown to all viewers. If all options performed similarly, the first combination becomes the default. You can override the automatic selection at any time through the metadata editor or YouTube analytics page. Why YouTube Uses Watch Time Over CTR YouTube optimizes test results based on watch time rather than click-through rate. In the Creator Insider video, the company explained: “We want to ensure that your A/B test experiment gets the highest viewer engagement, so we’re optimizing for overall watch time over
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