Check reported source overlap
Submit a passage you are authorised to share, inspect the returned source links, and review attribution in context. Enter between 50 and 50,000 characters. Request limits are 3 per minute, 20 per hour and 60 per day. The form uses a separate processing service; avoid confidential material. Its retention practices have not been independently verified.
Short answer
AI detection and plagiarism checking answer different questions. The first estimates patterns in language; the second compares material with sources available to a service. Read the passage and its attribution before interpreting either kind of report.
What is the difference?
A plagiarism or similarity service compares material with sources available to it. An AI detector estimates patterns in language. Generated wording can have no close source match, while human writing can reproduce a source without attribution. Neither task automatically performs the other.
How should a source match be reviewed?
Open the source and read the relevant wording. Check quotations, close paraphrases and attribution. A match may be legitimate, and a low similarity result does not prove that every idea is original. The assignment and the actual sources matter.
What should a report explain?
A source-comparison report should identify the relevant wording and the sources available for inspection. A percentage alone does not explain whether a quotation is properly attributed or whether a paraphrase needs revision. Review the evidence and the applicable policy before making a decision about a writer.
| Task | Useful evidence | Limit |
|---|---|---|
| AI check | Service estimate on text | No source-database comparison established |
| Similarity check | Matching source and passage | Match alone does not prove misconduct |
| Attribution review | Quotations, citations and source support | Requires reading in context |
Frequently asked questions
Can plagiarism checking establish who wrote a passage?
A detector or report should not be the sole evidence for an authorship claim. Identify the actual feature, inspect the writing and sources, and give the writer a fair opportunity to explain their process.
What evidence supports this plagiarism checking guide?
This is a documentation and source-code review where stated, not a completed performance benchmark or classroom walkthrough. Account-specific steps and limits can differ; confirm the actual service and permissions in your approved account.
Can a public checker predict a school report?
No. A separate service cannot inspect a private institutional account or reproduce its settings. Any estimate should be kept separate from the report used by the school.
Sources
Choose the relevant next step
To understand what the separate AI checker can and cannot establish, read using the free passage checker, methods for reviewing writing concerns, and detector accuracy and missing evidence. Each guide separates documented features from an estimate or assumption about a writer.