YouTube shows subscriber counts of creators with over 1,000 subscribers differently across platforms. In some places, the video streaming website shows an abbreviated subscriber count like 500k, whereas in other places it shows a full subscriber count like 500,237.
YouTube has stated that along with its mobile, desktop websites and app it will also make the change in its API services. So any third parties using YouTube’s API services will also showcase the subscriber count in an abbreviated manner.
However, creators won’t be affected by this change as they can see the exact number of subscribers they have inside of the YouTube Studio.
Now, for channels which have lower than 1,000 subscribers, YouTube will show their exact subscriber count. However, after their subscriber count crosses 1,000, an abbreviated subscriber count will be shown to their public with subscriber numbers on a sliding scale.