YouTube Algorithm & Policy History (2005–2026)
From the first upload in 2005 to watch-time ranking, Shorts, AI disclosure labels and the 2025–2026 inauthentic content rules.
Why this history matters
YouTube’s ranking and monetisation rules have changed many times. See how the YouTube algorithm works and the channel audit.
13 updates, newest first
- Policy & toolsYouTube Partner Program Clarification & Studio Insights (2026)
Defined 3 kinds of non-monetisable inauthentic content; Analytics renamed Insights with AI cards; custom Shorts thumbnails.
- Monetisation policyYouTube Inauthentic Content Policy (2025)
'Repetitious content' renamed 'inauthentic content': mass-produced, repetitive videos can't be monetised.
- FeatureYouTube Shorts Up to 3 Minutes (2024)
Shorts length limit raised from 60 seconds to 3 minutes.
- PolicyYouTube Altered or Synthetic Content Labels (2024)
Creators must disclose realistic AI-generated or altered content.
- MonetisationYouTube YPP Expansion (500 Subscribers) (2023)
Lower tier for fan funding features at 500 subs.
- MonetisationYouTube Shorts Revenue Sharing (2023)
Shorts creators began earning a share of ad revenue.
- FeatureYouTube Dislike Counts Hidden (2021)
Public dislike counts removed.
- FeatureYouTube Shorts (2020)
Short-form vertical video launched.
- MonetisationYouTube YPP Threshold: 1,000 Subs + 4,000 Hours (2018)
New eligibility rules after brand-safety issues.
- AlgorithmYouTube Watch Time Becomes the Key Signal (2012)
Recommendations shifted from views to watch time, ending clickbait-by-views.
- MonetisationYouTube Partner Program (2007)
Creators could earn a share of ad revenue.
- Platform eventGoogle Acquires YouTube (2006)
Google bought YouTube for $1.65 billion.
- Platform eventYouTube Launch (2005)
First video, 'Me at the zoo', uploaded.