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GPTZero

GPTZero

Check writing for AI-associated patterns and review sentence-level findings

AIコンテンツ検出AI DetectionWriting ReviewSentence AnalysisTrial

GPTZero is a web-based AI writing detector that checks text for patterns associated with ChatGPT, Claude, Gemini, and other models. It adds sentence-level findings, writing feedback, and education integrations such as Canvas and Google Classroom, helping reviewers inspect a document rather than rely on a single label.

公式サイトへ

更新日

2026-10-26

対応プラットフォーム

Web / Chrome Extension

お試し

The site promotes a free detector and links to plan options, but this capture did not expose exact prices or scan limits; confirm the current terms on GPTZero's official pricing page.

* 料金は参考情報です。最新の料金は公式サイトをご確認ください

GPTZero
gptzero.me

GPTZeroの主な機能

  • AI Text Scan

    Check a document for patterns associated with several major AI models before deciding what needs a closer human review.

  • Sentence Findings

    Inspect sentence-level results to locate passages behind a document's overall assessment instead of reviewing only one summary label.

  • Writing Feedback

    Use writing feedback to examine clarity and quality alongside detection signals, keeping authorship review separate from editing advice.

  • Education Tools

    Use the browser extension or connect with supported learning platforms to bring document checks closer to existing review workflows.

GPTZeroのおすすめ用途

Educators

Review submitted writing with sentence-level signals and connect checks to learning workflows without treating a score as proof.

Student writers

Inspect a draft's flagged passages and writing feedback, then use the findings to explain and document the writing process.

Editors

Screen incoming copy for patterns associated with major AI models before asking authors for context or further review.

長所

  • Sentence-level results make flagged passages easier to inspect
  • Education integrations fit established classroom workflows
  • Writing feedback adds context beyond an AI score

注意点

  • The captured pricing page did not expose exact plans or scan limits
  • Detection results need human review and should not stand alone

GPTZero のクイックスタートと実践のコツ

クイックスタート

  1. 1

    Paste one representative passage rather than a mixed-purpose file, then run a scan to get its document-level result.

  2. 2

    Open sentence-level findings and compare flagged lines with the original draft or revision history before following up.

  3. 3

    For class reviews, connect Canvas or Google Classroom to fit checks into the existing submission workflow.

実践のコツ

Core tip: Treat the score as a review signal, not a verdict. Do compare flagged passages with drafts, notes, or revision history; don't confront a writer or make a disciplinary decision from one scan. If the evidence conflicts, ask about the writing process and keep the detector output as one contextual clue.

よくある質問

01Can GPTZero prove who wrote a passage?

No. A detector estimates patterns in text and cannot establish authorship by itself. For a consequential review, compare the result with drafts or revision history and ask the writer about their process before reaching a conclusion.

02How should I review a mixed human-and-AI draft?

Use sentence-level findings to locate passages worth discussing, then compare them with the surrounding draft and available writing history. A flagged sentence is a lead for review, not proof that the entire document was generated.

03Should one scan decide an academic case?

No. A single scan does not capture the full writing process and may misclassify text. Follow your institution's review procedure, consider drafts and other context, and give the student a chance to explain their work.

掲載特集

AI 検出ツールの選び方：5 つのツールを比較

GPTZeroの代替ツール

このツールが合わない場合は、次の代替候補をご覧ください