“YouTube's algorithm tests a video primarily in its first 1–3 days, after which performance is largely set.”
disagrees
the data runs the other way here
Held 25 days · Last changed Sep 28, 2026 · 1 changedisagrees on 3 of 5 pooled public channels · inconclusive on 1
What the check does
For each video with ≥14 days tracked, what fraction of total lifetime views came from days 1–3? Channel median across qualifying videos.
The reading
0.33
Checked on 29 videos ·
How the verdict has moved
- Oct 21, 2026 – Oct 22, 2026disagrees
- Sep 28, 2026 – Oct 20, 2026disagrees
- Sep 11, 2026 – Sep 27, 2026inconclusive
Where the belief comes from
VidIQ and TubeBuddy guides; widely repeated in creator literature.
Checked against
Keep reading
The rest of the record
This belief sits in a ledger of fifty, each one re-checked every day. These surfaces carry the rest of it.