A1 – Basic expressions, introductions, and personal details.
A2 – Simple sentences, routine tasks, and common topics.
B1 – Clear input, personal interests, and familiar situations.
B2 – Complex topics, fluency with native speakers, and technical discussions.
C1 – Demanding texts, effective communication, and social, academic, and professional purposes.
C2 – Virtually everything, precise expression, and nuanced meaning.