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Clasa AI
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Introduction
Clasa is a free AI essay grader and checker that scores essays against your rubric and returns annotated feedback in seconds.
Listed on
September 27, 2026
What is Clasa AI?
Clasa AI is a web-based AI essay grader and checker built for teachers, schools, and students. It evaluates essays, papers, and theses against your own rubric or grading instructions and returns rubric-aligned scores with detailed annotated feedback. It also includes built-in AI detection and shareable PDF reports, supporting grading in 31 languages.
How to use Clasa AI?
- Open the Clasa AI Essay Grader, paste your essay text or upload a file (up to 4000 characters in the free tool). Upload a rubric or add grading instructions, select the education level, and optionally paste the essay question or topic. Optionally enable AI detection, then click Grade Essay to get instant rubric-aligned scores and annotated feedback you can edit, download as a PDF, and share.
Core features of Clasa AI
- AI essay grading against custom rubrics or instructions
- AI rubric builder and reusable saved rubrics
- Built-in sentence-level AI detection
- Annotated, editable feedback with rubric-aligned scores
- Instant results with shareable PDF reports
- Support for 31 languages
- Free to start, no credit card required
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