For near beginners...
• Language: simplified (graded)
• Speed: slow
• Sentence structure: simple
• Vocabulary: basic
CEFR: A1 | IELTS: 2-3 | TOEIC: 200-250
For high beginners...
• Language: simplified (graded)
• Speed: slow
• Sentence structure: mixed
• Vocabulary: intermediate
CEFR: A2 | IELTS: 3-4 | TOEIC: 250-350
For low-intermediate learners.
• Language: real/natural
• Speed: almost normal
• Sentence structure: mixed
• Vocabulary: intermediate
CEFR: B1 | IELTS: 4-5 | TOEIC: 350-500
For high-intermediate learners...
• Language: real/natural
• Speed: normal
• Sentence structure: mixed
• Vocabulary: intermediate + idiomatic
CEFR: B1+ | IELTS: 5-6 | TOEIC: 500-650
For advanced learners...
• Language: real/natural
• Speed: normal
• Sentence structure: complex
• Vocabulary: advanced + academic
CEFR: B2 | IELTS: 6-8 | TOEIC: 650-850
For near fluent speakers...
• Language: real/natural
• Speed: normal
• Sentence structure: complex
• Vocabulary: advanced + academic + idiomatic
CEFR: C1 | IELTS: 8+ | TOEIC: 850+