VSTEP Prep
A multi-category learning and exam-prep platform powered by AI. AI grades work, analyzes mistakes, and generates a personalized study path for each learner.
Overview
VSTEP Prep is a multi-category learning and exam-prep platform powered by AI. Each field is its own category with a tailored question bank and grading rubric. The category live today is VSTEP English exam prep (B1 to C1): learners take tests, AI grades them automatically, gives detailed feedback, analyzes mistakes, and generates a study path tailored to each person. The same AI core extends to other exams and subjects.
- Tech stack
- ReactTypeScriptFastAPIlitellmPostgreSQL
- Focus
- EducationMulti-categoryAI gradingPersonalized paths
Key features
AI grading across all 4 skills
Listening and Reading are auto-graded instantly. Speaking and Writing are graded against the VSTEP rubric with detailed feedback and band conversion.
Speaking and pronunciation scoring
AI scores pronunciation, fluency, prosody, and accuracy for each spoken answer, with feedback on every criterion.
Writing graded by rubric
AI reviews each criterion: task fulfillment, organization, vocabulary, and grammar, flagging concrete mistakes to fix.
Result analysis and study path
AI reads mistakes, pinpoints weaknesses by question type, and generates a personalized practice path.
Vocabulary roundup by CEFR
AI extracts key vocabulary from each test, tagged with CEFR level, meaning, and example sentences.
One mechanism, applied across many exams, skills and languages
Apply it to any problem that needs open-ended scoring and personalized exam prep.
English exams
- VSTEP
- IELTS
- TOEIC
- TOEFL
Auto-scored skills
- Writing
- Speaking
- Pronunciation
- Vocabulary & grammar
Academic settings
- Essays
- University exit exams
- A2 / B1 / B2 certificates
- Interview practice
Other languages
- Japanese
- Chinese
- Korean
- French
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