The lowest CPM (Cost Per Mille) on YouTube can be found in the category of Shorts, which are short-form videos on the platform. Specifically, the lowest estimated CPM for Shorts is around $0.02, while the RPM (Revenue Per Mille) is approximately $0.01. This indicates that creators earn a minimal amount for every thousand views on their Shorts content. In contrast, other categories, such as music, have significantly higher CPM rates, with estimates around $1.36. This disparity in CPM rates highlights the varying monetization potential across different content types on YouTube. Factors such as audience engagement, content type, and advertiser demand can all influence these rates, making it essential for creators to understand their niche and target audience to maximize their earnings.