Criterion — IB-trained AI grading and brainstorming for EE, TOK and IA
Criterion grades IB Extended Essays, TOK essays and Internal Assessments against the official IB markscheme — and helps you brainstorm topics, research questions and outlines before you write a word. Calibrated to IB severity. Never writes for you.
What Criterion does
- Grade your draft: Upload your EE, TOK essay or IA draft and get a band per criterion in minutes, with criterion-by-criterion feedback.
- Brainstorm a topic: No draft yet? Brainstorming mode helps you choose a topic, narrow a research question and plan an outline before you write.
- Calibrated to the IB markscheme: Trained on the official IB rubrics and severity. Defaults to the lower band when in doubt.
- Never writes for you: Criterion will never draft, paraphrase or ghost-write your work — the words stay yours.
Frequently asked questions
- Which IB assessments does Criterion grade?
- Extended Essay across all major subjects, TOK essay against the current prescribed titles, and Internal Assessments for the major IB subjects (Math AA & AI, Bio, Chem, Physics, Econ, History, English A, Language B, Psychology and more).
- Will Criterion write my essay?
- No. Criterion only provides AI feedback, predicted grades and brainstorming. It will never draft or paraphrase your work.
- Is Criterion affiliated with the IB?
- No. Criterion is not affiliated with the International Baccalaureate Organization (IBO). It is an independent IB-trained AI tool built for students.