The feature is currently limited to US desktop users of YouTube Studio. A global launch and rollout to Studio mobile are planned for later this year. Rather than having to remove or re-edit videos that have triggered copyright claims, creators will now have the option to swap out the offending audio for an AI-generated, royalty-free alternative — keeping the video live and potentially restoring its ability to be monetized.
Source: YouTube creators hit by music copyright claims can now replace tracks with AI