Completion Rate

Completion rate picks up where hook rate stops. Hook rate tells you whether people stayed through the opening; completion rate tells you whether they stayed through the clip. Reading them together diagnoses most problems on its own. High hook, low completion means the opening works and the clip loses people afterward — usually it runs long, sags in the middle, or the payoff is not worth the wait. Low hook, high completion means the clip is good once someone commits and the first three seconds are not earning that commitment.

Length distorts the number, so compare like with like. Shorter clips finish more often for the trivial reason that finishing costs less. A 20-second clip at 70% completion is good. A 55-second clip at 70% is unusual. Benchmarking a minute-long clip against a fifteen-second one produces a conclusion about duration, not quality.

The number matters at two moments. It feeds the platform's initial distribution decision alongside hook rate and engagement. And on TikTok it interacts with looping — when a clip ends and the viewer watches again, each loop counts, so clips that end on a reveal, an unfinished line, or something that begs a rewatch post completion figures above 100% and get pushed accordingly. That is a real technique, not a glitch, and it is the reason where you end a clip deserves as much thought as where you start it.