Checking an essay is not the same as detecting a paragraph
An essay checker has to do something a plain detector doesn't: read for consistency across a whole document, not just flag a suspicious sentence in isolation. A student essay that opens with a rough, uneven paragraph and then shifts into flawless, textbook ChatGPT phrasing for the next four pages tells a different story than one that's uniformly polished throughout — and it's the kind of pattern a sentence-by-sentence score alone can miss if you only glance at the total. This tool is built for that longer-document context: essays, reports, and papers, where the interesting signal is often the shift in style, not just the average.
What the checker looks at
| Signal | Why it matters in an essay |
|---|---|
| Consistency across sections | A jump from casual, imprecise writing to polished, formal prose partway through is a stronger signal than uniform quality throughout. |
| Thesis-and-topic-sentence pattern | ChatGPT essays often restate the thesis at the start of every paragraph in near-identical phrasing, a habit less common in student drafts written under time pressure. |
| Citation and evidence handling | Watch for confident claims with no citation, or citations that don't quite match the claim — a known ChatGPT weak spot. |
| Vocabulary level vs. grade level | Sudden jumps in vocabulary sophistication relative to a student's usual writing are worth a second look. |
| Transition-word density | Heavy, repeated use of "moreover," "furthermore," and "in conclusion" across every paragraph break. |
How to run a check
- Paste the full essay, or the section you're unsure about, into the box above.
- Review the overall score alongside the sentence-level highlighting.
- Look specifically for where the highlighting clusters — a check spread evenly through the whole piece reads differently than one concentrated in two paragraphs.
- If you have earlier work from the same writer, compare vocabulary and sentence rhythm against it.
- Use the result to guide a conversation with the student or writer, not as a final ruling.
A note for teachers and academic staff
No detector, including this one, should be the sole basis for an academic integrity finding. False positives happen, and they land disproportionately on students who write in a formal, structured style — often non-native English speakers or students who've been taught to write in a rigid five-paragraph format. Most institutions with a mature AI policy treat a high score as a reason to have a conversation, review drafts and edit history if available, or request a walkthrough of the writer's reasoning — not as evidence on its own.
For students, the more useful takeaway is usually forward-looking: if you drafted with ChatGPT and need to turn that draft into your own submission, the ChatGPT Humanizer and ChatGPT Paragraph Rewriter can help you revise specific sections — but check your institution's AI policy first, since many programs restrict AI use on graded work regardless of how it's edited afterward.
What this tool doesn't do
It doesn't check for plagiarism against a database of existing sources — that's a separate problem from AI-generated text and needs a dedicated plagiarism checker. It also doesn't produce a legally or academically defensible "proof" of AI use; treat every score as an input to human judgment, particularly when the outcome affects a student's grade or standing.