IB Essay Grader

Know your IB score before the exam

IBLens is a free AI IB essay grader that scores your Internal Assessment (IA), Extended Essay (EE), or Theory of Knowledge (TOK) essay against the official IB rubric in 60 seconds. Get a criterion-by-criterion breakdown, a predicted band, the exact marks you are losing, and specific improvements. Your first analysis is free — no account required, no subscription. IBLens is calibrated to grade like a strict examiner — no inflated scores.

What IBLens grades

• Internal Assessments (IA) for every IB subject — Biology, Chemistry, Physics, Economics, History, Psychology, Business Management, Maths AA/AI, Computer Science and more.
• Extended Essay (EE) across all subjects, against the five official EE criteria.
• Theory of Knowledge (TOK) essays and the TOK Exhibition.

How the IB essay grader works

1. Paste your essay and select your subject and essay type.
2. The AI evaluates every official IB criterion in about 60 seconds.
3. You get a predicted score, per-criterion feedback, and specific fixes.

Why IB students use IBLens

IB tutors charge $80–150 per hour. A single IBLens analysis costs $4.99 and takes 60 seconds — with feedback based on the official IB marking criteria, available 24/7. Your first essay is graded free.

Grade my IB essay free →  ·  See pricing  ·  IB University Strategy ($25)  ·  Free IB study guides