Free AI Essay Grader — Instant GRE, SAT & IELTS Feedback
The WitPrep AI Essay Grader is a free online tool that scores GRE Analytical Writing (0–6), IELTS Writing Task 1 and Task 2 (Band 0–9), and SAT essays on their official rubrics in under 60 seconds — no signup, no credit card, unlimited submissions. Paste any essay of 50+ words, pick the exam, and receive a numeric score plus paragraph-level feedback on structure, argument, evidence, vocabulary, and grammar.
How It Works (3 Steps)
- Choose your exam — GRE Issue, GRE Argument, IELTS Task 1 (Academic or General), IELTS Task 2, or SAT essay.
- Paste your essay — minimum 50 words; typical essays run 250–600 words.
- Get scored in ~45 seconds — receive a final score on the official scale, sub-scores for each rubric criterion, a list of strengths, a list of weaknesses, and 3–5 specific revision suggestions.
Scoring Rubrics At a Glance
| Exam | Scale | Criteria Evaluated | Source |
|---|---|---|---|
| GRE Analytical Writing | 0–6 (half-point) | Structure, Argument Development, Evidence, Language Use, Grammar | ETS official AWA rubric |
| IELTS Writing Task 1 & 2 | Band 0–9 (half-band) | Task Achievement / Response, Coherence & Cohesion, Lexical Resource, Grammatical Range & Accuracy | British Council / IDP / Cambridge band descriptors |
| SAT Essay | 2–8 per dimension | Reading, Analysis, Writing | College Board scoring guide |
WitPrep AI Essay Grader vs Alternatives
| Option | Price | Turnaround | GRE | IELTS | SAT | Per-Criterion Feedback |
|---|---|---|---|---|---|---|
| WitPrep AI Essay Grader | Free | ~45 seconds | Yes | Yes | Yes | Yes |
| ETS ScoreItNow! | $20 (2 essays) | Minutes | Yes | No | No | Limited |
| Human tutor | $30–$100 / essay | 1–3 days | Yes | Yes | Yes | Yes |
| Grammarly | Free / Premium | Instant | No score | No score | No score | Grammar only |
Best For: Use Cases
- Best for GRE AWA prep: grade Issue and Argument essays against the ETS 0–6 rubric and target a 5.0+ for top programs.
- Best for IELTS Writing: calibrate Task 1 and Task 2 against the band descriptors before paying for human marking.
- Best for SAT essay practice: get Reading/Analysis/Writing dimension scores quickly.
- Best for repeated drafts: unlimited free submissions let you revise and re-grade until the score stabilises.
Frequently Asked Questions
Is the WitPrep essay grader really free?
Yes. The grader is free with no signup, no credit card, and no submission limit. Account-holders see their grading history saved across devices, but it is not required to use the tool.
How accurate is the AI essay grader compared to human graders?
The grader is calibrated against ETS sample essays for GRE AWA, British Council / IDP band descriptors for IELTS, and College Board exemplars for SAT. Independent calibration runs show the AI score lands within ±0.5 of the human score for ~80% of GRE AWA essays and within ±1 band for ~85% of IELTS essays.
How long does it take to get my essay graded?
Typically 30–60 seconds. The AI reads your essay, evaluates structure and argumentation, checks grammar and vocabulary, generates per-criterion feedback, and returns the final score in under a minute.
What types of essays can I grade?
GRE Analytical Writing (Issue and Argument), IELTS Writing Task 1 (Academic and General Training) and Task 2, and SAT Rhetorical Analysis essays. Each essay type is scored on its own official rubric.
Can I use this to practice for the GRE AWA section?
Yes. GRE mode scores on the same 0–6 scale ETS uses and provides separate scores for structure, argument development, evidence, language, and grammar — the same dimensions an ETS rater evaluates.
What model powers the grader?
The grader uses OpenAI GPT-4o-mini with rubric-specific prompting calibrated against published sample essays at each band/score. Calibration sets are refreshed when ETS, British Council, or College Board update their official scoring guides.
Will the grader explain how to improve my score?
Yes. Every grading run returns a list of concrete revision suggestions — usually 3–5 — keyed to the rubric criterion where you lost points. Apply them and re-grade to confirm the score moves.