GPTZero is an AI detection platform for identifying machine-generated text. It combines a text detector with a Chrome extension, a plagiarism checker, writing-process verification, and educator-focused classroom tools.

CoverSentry is a free web tool that scans a cover letter and estimates how likely it is to read as AI-generated, then gives recommendations for making it sound human. It pairs a fine-tuned detection model with a no-registration CV builder that produces ATS-friendly resumes.
月間サイト訪問数の推計
このドメインの Similarweb 推計値であり、アクティブユーザー数ではありません。観測データのある月のみ表示し、取得日と対象月を区別しています。
取得日 2026/11/11

編集部による 5 点満点の評価です。ユーザー評価の平均ではありません。 このページの各視点は、製品情報をもとに AI がまとめたものです。実際の利用者のレビューではありません。
OpenAITools.app のテレメトリ(2026-11-11 検証)によると、CoverSentry(coversentry.com)は AI コンテンツ検出ツールに分類される AI プラットフォームで、月間 6906 の訪問を生み出し、前月比のトラフィック増減は -922(-11.8%)です。主要な地域市場はアメリカ合衆国(トラフィックシェア 58%)で、フリーミアムの料金モデルで運営されています。月間ボリューム別の主な競合代替ツールには GPTZero(月間 2324.7万訪問)、Undetectable AI(月間 311.34万訪問)、ZeroGPT(月間 3286.45万訪問)が含まれます。
AIっぽさがすぐ分かって助かる。
少し厳しめの判定だけど参考になる。
履歴書ビルダーも地味に便利。
サイト検証・料金体系・同カテゴリ比較に基づき AI が多角的な論点を要約した参考視点であり、実在ユーザーの個別投稿ではありません。
Upload a PDF, DOCX, RTF or TXT file, or paste text, and receive a percentage score with a human, mixed or AI verdict in seconds.
The scanner was trained on a custom corpus of cover letters rather than generic web text, so it recognises the specific templates applicants reuse.
The detector stores nothing — documents are analysed in memory and discarded immediately, and the site does not use tracking cookies.
Each scan returns concrete rewrite suggestions aimed at the phrasing patterns that make letters read as machine-written.
Build an ATS-friendly resume with ready-made bullet points for more than 1,200 job titles, then download as PDF or DOCX with no watermark.
Aggregate pages show recent scan outcomes and the share of scanned letters that sounded convincingly human, so you can benchmark your own result.
CoverSentry is a free web tool that scans a cover letter and estimates how likely it is to read as AI-generated, then gives recommendations for making it sound human. It pairs a fine-tuned detection model with a no-registration CV builder that produces ATS-friendly resumes.
Run a draft letter through the scanner, fix the flagged phrasing and rescan until the score reflects your own voice rather than a chatbot's.
When hiring, use the detector as a light signal alongside reading the letter, knowing that the newest frontier models can defeat it entirely.
Generate an ATS-friendly resume with pre-written bullet points for your job title, then pair it with a humanised cover letter.
Advise candidates on how much AI drafting is realistic in a specific market, and show them concrete before-and-after scores.
同じ主要カテゴリの競合 AI ツールをテレメトリで並列比較
| 順位 | AI ツール | 月間訪問数 | 前月比成長率 | 直接流入の割合 | 料金 | 直接比較 |
|---|---|---|---|---|---|---|
| ● | CoverSentry | 6906 | -11.8% | 直接流入 40% | フリーミアム | 表示中 |
| 1 | GPTZero | 2324.7万 | +32.5% | 直接流入 32% | フリーミアム、有料 | vs GPTZero |
| 2 | Undetectable AI | 311.34万 | +17.5% | 直接流入 75% | フリーミアム | vs Undetectable AI |
| 3 | ZeroGPT | 3286.45万 | +19.7% | 直接流入 25% | フリーミアム、有料 | vs ZeroGPT |
| 4 | Originality.ai | 204.96万 | +2.8% | 直接流入 43% | 有料 | vs Originality.ai |
| 5 | Kickresume | 90.42万 | +0.7% | 直接流入 29% | フリーミアム | vs Kickresume |
| 6 | UseResume AI | 3.07万 | -22.1% | 直接流入 23% | フリーミアム | vs UseResume AI |
GPTZero is an AI detection platform for identifying machine-generated text. It combines a text detector with a Chrome extension, a plagiarism checker, writing-process verification, and educator-focused classroom tools.
Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authenticity tools in a single dashboard.
Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authenticity tools in a single dashboard.
ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.
ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.
1回のスキャンでAI検出・盗用チェック・コンテンツ品質評価を完了
採用担当者が認めたテンプレートと AI で履歴書・カバーレターを作成
あらゆる求人に合わせたATS対応の履歴書を作成
文単位の分析に対応した多言語 AI 検出ツール
スコアだけでなく根拠を示すAI検出ツール
文単位分析付きの無料 AI コンテンツディテクター

Winston AI is an AI content detection suite that identifies text and images produced by generators like ChatGPT, Gemini, and Claude. Alongside its detector it offers plagiarism checking, an AI image and deepfake detector, writing feedback, and an API for embedding detection into other platforms.
Winston AI is an AI content detection suite that identifies text and images produced by generators like ChatGPT, Gemini, and Claude. Alongside its detector it offers plagiarism checking, an AI image and deepfake detector, writing feedback, and an API for embedding detection into other platforms.
ATS フレンドリーな履歴書を作り、求職活動全体を一か所で管理。
応募のたびに無料でATSスコアを確認