The artist visa is a type of freelance visa. This visa is for freelance artists and journalists who want to live in Berlin. It's only available in Berlin. It is not available in the rest of Germany. Like the freelance visa, the artist visa is a type of residence permit.

The process for getting an artist visa is the same as for getting a freelance visa. You can get the visa on the same day, instead of waiting 3-4 months. That's the only difference.