Originality

Not a percentage to fear. A map of what is already in the literature, what you quoted, what you reused from yourself, and what is yours.

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Originality checking against published research

The Bibby plagiarism detector maps uncited, quoted, paraphrased, and boilerplate overlap between your writing and published papers and preprints. It searches OpenAlex, Semantic Scholar, Crossref, and arXiv for distinctive phrases, then scores verbatim n-gram overlap and a paraphrase signal against those real sources. It is LaTeX-aware and included with Bibby Pro. Pair it with the AI detector for a writing-style signal.

How it works

  1. 01

    Paste your draft

    Paste a section, abstract, or full draft. LaTeX is stripped automatically so only your prose is compared.

  2. 02

    Search published sources

    Bibby queries OpenAlex, Semantic Scholar, Crossref, and arXiv for distinctive phrases from your text.

  3. 03

    Review the overlap report

    Read the verbatim n-gram score, the paraphrase signal, and the matched source list with a sentence-level heatmap.

What it reports

  • Open scholarly corpora: OpenAlex, Semantic Scholar, Crossref, arXiv
  • Verbatim n-gram overlap scoring
  • Paraphrase similarity signal
  • Sentence-level overlap heatmap
  • Matched source list with links
  • LaTeX-aware text stripping

Frequently asked questions

What does the Bibby plagiarism detector check?
It searches OpenAlex, Semantic Scholar, Crossref, and arXiv for distinctive phrases from your text, then scores verbatim n-gram overlap and a paraphrase signal against those published sources.
Is it included with Bibby Pro?
Yes. There is no extra fee. Open it from the workspace sidebar, from AI tools, or by asking the agent to open the plagiarism detector. Checks run on this page, not inside chat.
Does it check student-paper databases?
No. It compares your writing with published literature, preprints, and (when configured) the open web. That is the signal that matters for research writing.
How is this different from the AI detector?
The AI detector estimates whether prose looks machine-written. This tool looks for overlap with real papers. Use both if you want writing-style and source-overlap signals.
Does my text get uploaded or stored?
Your draft is sent only to run the search for matching published sources and is not saved to a student-paper database. It is used to compute the overlap report you see on this page.
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Plagiarism Detector — overlap with published papers | Bibby | Bibby AI