Around 59% of the videos shown on a new TikTok account’s For You feed were classified as AI slop, according to research from video creation company Kapwing.
The figure was nearly 300% higher than the result from the same test on YouTube Shorts.
TikTok vs YouTube
Kapwing created a fresh TikTok account and reviewed the first 500 videos shown on its For You feed.
It classified 294 videos, or 59%, as AI slop. The company conducted the same test on YouTube and found that 104 of the first 500 Shorts, or 21%, met the same standard.
Kids Hit Hardest
Kapwing also manually reviewed more than 10,000 TikTok videos across 20 categories. The Kids category recorded the highest concentration of AI slop. Of the 2,000 videos reviewed, 57% were classified as AI-generated content.
The #cartoonkids tag recorded the highest rate, with 97 of its 100 featured videos identified as AI-generated. The rates reached 83% for both #cartoons and #babysong, while #forkids recorded 79%.
Other Categories
After children’s content, Science and Education had an AI slop rate of 35%. Health and History each recorded rates of about 33%.
These categories frequently rely on visual illustrations and voiceover narration. Categories centred on real people and physical demonstrations recorded much lower rates.
Fashion had the lowest rate at 1.3%, followed by Music at 1.5% and Fitness at 1.6%.
Billions of AI Videos
TikTok had already labelled 1.3 billion videos as AI-generated by November 2025, according to the report.
The findings indicate that AI-generated videos now account for a large share of the content presented to new TikTok users, particularly in categories aimed at children.
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