Paste your personal statement into the checker below and press check, and you get a 0 to 100 AI score with one of three verdicts: reads as AI-generated, borderline, or reads as human-written. It is free, ten credits a day, one credit per check whatever the length, and there is no account, no login, no card and no email address. The floor is 65 words, which any full statement clears many times over. Read the score as a symptom rather than a judgement on you. Personal statements score high more often than almost any other student writing, including statements written entirely by hand, because the form rewards what a detector measures: formal register, even sentence length, careful hedging, and summary in place of detail. This page covers why that happens, which lines carry the score, what checking before submission actually buys you, and how to keep a record of the drafting so a question after submission is answerable with specifics. The tools that help are free and unlimited in your browser, and the one credit a check costs means you can afford to score the statement, edit it and score it again before the deadline arrives. A score alone never proves anything about you, but used the way this page describes, it shows you exactly which lines to fix and why.
Detectors measure style, not authorship. They score how predictable the phrasing is and how uniform the sentences are. A personal statement is written to a taught shape by everyone applying, all working from similar advice, so the drafts converge whether or not a model was ever opened.
The character limit does a specific kind of damage nobody warns applicants about. UCAS caps the whole statement at 4,000 characters and graduate programmes usually cap you at one or two pages. When a draft runs long, the first thing most people cut is the concrete part: the module name, the number, the line somebody actually said. What survives is the summary sentence, which makes the same claim from higher up. Cutting to length that way turns concrete prose into abstract prose, and abstract prose is what scores high.
This falls hardest on people writing in a second language. Liang and colleagues at Stanford HAI found in 2023 that 61% of TOEFL essays by non-native English speakers were falsely flagged as AI across seven detectors. Every one of those essays had a human author, and the page for second-language writers covers the practical side of that finding.
The reader is working through a large pile in a short window and is not trying to catch you. What they register first is the absence of checkable facts. Over-polished statements talk about qualities: curiosity, resilience, a genuine passion for the field. A statement written by the applicant talks about events.
Strong analytical skills and I spent six weeks rebuilding a dataset because the first version double-counted every repeat visitor make the same claim, and only one of them could have come from you. Graduate readers apply the same test harder, because a fit paragraph naming no paper and no method reads as filler to faculty who know the field.
The voice question matters here as much as the score. A generic statement reads as AI whether or not a detector says so, because the reader has already seen forty statements assembled from the same stock lines. The score and the reader are responding to the same thing, which is why fixing the writing fixes both.
The registry of 44 named AI writing tells explains each pattern and highlights where it fires in your own draft. It costs no credits, has no daily limit, and runs in your browser tab, so it is the right tool to open before you spend a single check on the statement. These six dominate personal statements.
None of them are wrong in isolation. They read as machine-made when they arrive in combination, which is exactly what happens when everyone edits to the same advice under the same character limit.
UCAS runs submitted statements through similarity software. That is a copying check: it compares your text against previously submitted statements and published sources, and it answers a different question from the one an AI score answers. A statement can be original by that measure and still read as generic.
Read the current UCAS guidance for your cycle rather than relying on what was true last year, because the wording changes. Phrasing lifted from an example statement or a friend's draft is the more provable problem and needs removing outright, since similarity software is built to find exactly that.
The originality check here answers the copying question in your own browser, free and unlimited, so you can run it before submission rather than discovering the overlap after the fact. The AI detection vs plagiarism page sets the two questions side by side.
If a statement is questioned, the weakest answer is a general denial and a finished file. The strongest is a record of the work. Write in the editor or on the proof of human writing page and the site records timestamps, text added and removed at each step, time worked, your revision ratio, and a flag when one insertion is large enough to be a paste. It records the shape of the session, not the text, so the content never leaves your browser.
The export is signed with an ECDSA P-256 key generated in your tab and commits to your exact document with a SHA-256 hash, so it proves the record belongs to that draft without carrying what you wrote. Whoever is asking drops the file on the verify page, gets a yes or no on the signature, and can confirm the text matches the hash, in their own browser.
Start it early, because the challenge arrives after submission and sometimes at interview. A record only exists from the moment you begin it, and nothing about the drafting before that moment can be reconstructed.
Run the check on the whole statement first. It costs one credit no matter how long the text is, so scoring 4,000 characters and scoring one paragraph cost the same. Then work in the free tools before you spend anything else. A score tells you a problem exists; the tells tell you where it lives, and most of it is fixed by hand in minutes, by replacing a claim about yourself with the event that proves it.
The humanizer rewrites every sentence in one click, takes 12,000 characters per run, and costs one credit per 50 words with a 25-word minimum. Read each rewritten sentence against your own facts, and check grades, module names and institutions by eye before you submit, since a rewrite works only from the text you give it.
For statements that are being questioned, the wrongly accused page lays out what to do in order, and the credit numbers below are the ones that apply to the standard lengths.
UCAS runs submitted statements through similarity software, which is a copying check rather than an AI check. What each university does beyond that is its own decision, and you will usually never be told. Read the current UCAS guidance for your cycle.
One credit to check, whatever the length. Rewriting is one credit per 50 words, so roughly 650 words is 13 credits in one run, above the daily 10. Work a paragraph at a time. A 200-word answer is 4 credits.
We report our own checker's score and verdict, and make no claim about how any other company's tool will score your text. What it does show you is which phrases in your draft match the named patterns in the tells registry, and those are the lines an admissions reader would flag as generic anyway.
Rewriting a draft you were permitted to generate is ordinary editing. Where the application states that AI is not permitted, that rule covers the draft however it is edited afterwards, and some applications ask you to declare AI use. Read the policy in front of you.
Produce specifics rather than a denial. Gather every trace of the drafting you have, including any file's version history. If you wrote here, the signed record gives timestamps, your revision ratio and any paste events, and the person asking can verify it in their own browser.