YouTube · Data study
I Compared 1,888 YouTube Scripts. Viral Ones Weren’t Written Differently
words a minute, viral and normal scripts alike
By Elijah Westbrook · 2026-10-19 · 2 min read
Viral scripts weren’t written differently. Across 294 channels, viral and normal scripts were spoken at the same pace (about 170 words a minute), with the same sentence length (14 words) and the same openings. The one clear difference was length: the viral video was longer in 64% of channels.
949 viral · 939 normal scripts
Good writing is the floor, not the edge
Every successful channel already writes with a human rhythm. That’s why viral and normal scripts look identical: the difference is the idea and the promise, not the sentences.
Write like you talk, then spend your extra effort on the idea.
Almost nobody opens with a greeting
Only 4% of viral scripts opened with “hey guys” or “welcome back” (6% of normal ones). 57% said a number in the first 15 seconds.
Open on the premise. Your first sentence should say what the video pays off.
What AI scripts get wrong
An AI-written script we measured had sentences half as long as a human script (6 words vs 12), almost half of them very short, and about 10× as many numbers.
Keep most sentences one breath long, use one number at a time, and say what it means right after.
From my channel
How I did it
Captions of 949 viral and 939 normal videos from 294 channels that had both, measured for pace, sentence length, connecting words, questions, numbers and openings.
The limits
Auto-captions add small errors. Scripts were compared within channels, so the patterns describe what changes inside a creator’s own work.
Questions
How fast should you talk in a YouTube video?
About 170 words a minute was the median for viral and normal scripts alike.
How do I make AI scripts sound human?
Match human rhythm: sentences around 12 to 14 words with a few short ones, one number at a time, and tell it like a story instead of a list.