There are 6 levels of German proficiency: A1, A2, B1, B2, C1 and C2.
C1 German is fluent German. It means that you can…1
- Understand TV shows and movies without too much effort.
 - Understand specialised articles and longer technical instructions, even about unfamiliar topic.
 - Speak fluently and spontaneously, without always searching for expressions.
 - Write about complex subjects in a letter, an essay or a report.