# GPTinf

OpenAITools.app のテレメトリ（2026-11-11 検証）によると、GPTinf（gptinf.com）は AI バイパスツール（世界ランキング #222）に分類される AI プラットフォームで、月間 67.42万の訪問を生み出し、前月比のトラフィック増減は +13.85万（+25.8%）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 33.1%）で、フリーミアム、無料トライアル、有料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 Undetectable AI（月間 311.34万訪問）、StealthWriter（月間 288.71万訪問）、StealthGPT（月間 29.09万訪問）が含まれます。

GPTinf is a web-based writing suite that combines AI humanization with a set of detection and quality tools. Paste your draft and it rewrites AI-style prose into more natural, human-sounding text, while its detector, plagiarism, readability and grammar tools help you spot problems before you publish or submit.

## 主なテレメトリと仕様

| 指標 | 値 |
| :--- | :--- |
| ツール名 | GPTinf |
| ハンドル | gptinf-com |
| Status | active |
| Origin | independent |
| Maintenance | active |
| 公式ドメイン | gptinf.com |
| ウェブサイト URL | https://www.gptinf.com |
| カテゴリ | AI バイパスツール, 検出されないAI, Humanizer AI, AI 言い換えツール, AI リライトツール, Bypass AI（AI検出回避）, AI コンテンツ検出ツール |
| 料金モデル | フリーミアム、無料トライアル、有料 |
| 月間訪問数 | 674,246 |
| 前月比トラフィック変動 | 138,468 |
| 前月比成長率 | +25.8% |
| 主要市場 | アメリカ合衆国 |
| 市場シェア | 33.1% |
| ダイレクト訪問 | 222,615 |
| オーガニック検索訪問 | — |
| ソーシャル訪問 | — |
| リファラル訪問 | 26,420 |
| メール訪問 | 5,819 |
| レビュースコア | 3.8 |
| 保存数 | 3 |
| 対応プラットフォーム | ウェブサイト |
| 請求プラットフォーム | paddle |
| 属性 | 機能: ウェブサイト; 料金: フリーミアム; 料金: 無料トライアル; 料金: 有料 |
| タグ | AIパラフレーズツール, AI検出の回避, コンテンツのヒューマナイズ, GPTZero回避, Turnitin回避, AIコンテンツ検出不可, 言い換えツール |

## 概要

GPTinf is a web-based writing suite that combines AI humanization with a set of detection and quality tools. Paste your draft and it rewrites AI-style prose into more natural, human-sounding text, while its detector, plagiarism, readability and grammar tools help you spot problems before you publish or submit.

## 料金とプラン

Freemium with a free tier that includes an unlimited AI detector, plus paid monthly subscriptions. Plans shown on the site are Lite at $4.99/month (5,000 humanizer words and 2,500 paraphraser words), Pro at $12.49/month (25,000 humanizer words and 12,500 paraphraser words), and Unlimited at $29.99/month with no caps on humanizer or paraphraser words.

## 主な機能と特長

- **AI Humanizer with Freeze:** Rewrites AI-style text to read more naturally and rebuilds sentence rhythm, with a Freeze option that locks the words, names or phrases you need to keep exactly as written.
- **Multi-System AI Detector:** Cross-checks your text against eight detection systems at once and shows a segment-level, color-coded breakdown so you can see which sentences carry the highest risk.
- **Paraphraser with Writing Modes:** Rephrases text in different modes so you can adjust tone, register or wording while locking important terms and preserving the original meaning.
- **Plagiarism Checker:** Scans your text against web sources, returns a plagiarism percentage, flags matching sentences and traces each match back to its source URL.
- **Readability & Grammar Checkers:** Reports a Flesch-Kincaid readability score with difficult passages highlighted, and catches contextual grammar errors you can fix with a single click.

## 主なユースケース

- **Prepare essays before submission (Students & academics):** Humanize an AI-assisted draft, then run it through the detector and plagiarism checker to see what a grading tool like Turnitin might flag before you hand it in.
- **Scale copy without losing your voice (Content marketers & freelancers):** Turn AI-generated blog posts and marketing drafts into text that matches your brand tone, then confirm it reads cleanly and is plagiarism-free before publishing.
- **Review submissions for AI involvement (Educators):** Use the detector and plagiarism checker to spot likely AI-generated or copied passages in student work before grading.
- **Polish non-native and templated writing (ESL & business writers):** Refine structured or formulaic drafts so phrasing sounds natural and professional, and check readability so the text suits your audience.

## 強み

- Six related tools — humanizer, detector, paraphraser, plagiarism, readability and grammar — in one dashboard
- Detector shows eight-system, segment-level results rather than a single opaque score
- Freeze option locks names, terms and jargon so rewriting does not distort key wording
- Free tier includes unlimited AI detection
- Plagiarism checker links each match back to its source URL

## 制約・デメリット

- Paid monthly subscriptions cap humanizer and paraphraser word counts on the Lite and Pro plans
- Central features rely on detection tools, whose scoring can change as those systems update
- No guarantees that text will pass any specific institution's or platform's detection policy

## よくある質問

### What does GPTinf actually do?
GPTinf is a writing suite with six tools: an AI humanizer, an AI detector, a paraphraser, a plagiarism checker, a readability checker and a grammar checker. You typically humanize a draft, then check it for AI signals, plagiarism and readability before publishing or submitting.

### Is there a free version?
Yes. The AI detector is advertised as free and unlimited, and there is a free tier so you can try the platform. Humanizer and paraphraser word allowances increase on the paid Lite, Pro and Unlimited plans.

### How much do the paid plans cost?
The site lists Lite at $4.99 per month, Pro at $12.49 per month, and Unlimited at $29.99 per month, with the main difference being how many humanizer and paraphraser words you get each month.

### Will humanized text pass AI detectors?
No tool can guarantee a specific result, and detector scoring changes over time. GPTinf's approach is to reduce the statistical patterns detectors often flag and let you review segment-level risk, so treat its output as one input rather than a promise.

### Can I keep important words unchanged?
Yes. The Freeze option lets you lock terms, names or jargon so the humanizer and paraphraser leave them exactly as written.

### Does GPTinf check plagiarism?
Yes. Its plagiarism checker scans your text against web sources, returns a plagiarism percentage, highlights flagged sentences and links each match to the source URL.

### GPTinf の月間トラフィックと成長トレンドはどうですか？
GPTinf は現在、月間 67.42万の訪問があり、前月比のトラフィック変動は +13.85万（成長率 +25.8%）です。主要な流入市場はアメリカ合衆国（シェア 33.1%）で、月間 22.26万のダイレクト訪問と月間 — のオーガニック検索訪問を含みます。

### GPTinf は無料ですか？料金モデルは何ですか？
GPTinf はフリーミアム、無料トライアル、有料の料金モデルで運営されています。Freemium with a free tier that includes an unlimited AI detector, plus paid monthly subscriptions. Plans shown on the site are Lite at $4.99/month (5,000 humanizer words and 2,500 paraphraser words), Pro at $12.49/month (25,000 humanizer words and 12,500 paraphraser words), and Unlimited at $29.99/month with no caps on humanizer or paraphraser words. 対応する請求・チェックアウトプラットフォームには paddle が含まれます。

### 2026年における GPTinf の最適な代替ツールはどれですか？
OpenAITools.app のカテゴリ別トラフィックと機能の適合性に基づくと、GPTinf の代替ツールトップ5は次のとおりです: 1. Undetectable AI（月間 311.34万訪問）; 2. StealthWriter（月間 288.71万訪問）; 3. StealthGPT（月間 29.09万訪問）; 4. Phrasly（月間 121万訪問）; 5. ZeroGPT（月間 3286.45万訪問）。

### GPTinf はどのプラットフォームと主要な AI 機能に対応していますか？
GPTinf は AI バイパスツール, 検出されないAI, Humanizer AI, AI 言い換えツールに分類され、以下のプラットフォームに対応しています: ウェブサイト。中核機能のタグには AIパラフレーズツール, AI検出の回避, コンテンツのヒューマナイズ, GPTZero回避, Turnitin回避, AIコンテンツ検出不可が含まれます。

## 代替ツール

| ツール名 | 月間訪問数 | 料金モデル | 比較 |
| :--- | :--- | :--- | :--- |
| [Undetectable AI](https://openaitools.app/ja/tool/undetectable-ai) | 3,113,403 | フリーミアム | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-undetectable-ai) |
| [StealthWriter](https://openaitools.app/ja/tool/stealthwriter) | 2,887,114 | フリーミアム | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-stealthwriter) |
| [StealthGPT](https://openaitools.app/ja/tool/stealthgpt) | 290,918 | 有料 | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-stealthgpt) |
| [Phrasly](https://openaitools.app/ja/tool/phrasly-ai) | 1,209,985 | Freemium, Subscription | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-phrasly-ai) |
| [ZeroGPT](https://openaitools.app/ja/tool/zerogpt) | 32,864,541 | フリーミアム、有料 | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-zerogpt) |
| [GPTZero](https://openaitools.app/ja/tool/gptzero-me) | 23,246,989 | フリーミアム、有料 | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-gptzero-me) |
| [Originality.ai](https://openaitools.app/ja/tool/originality) | 2,049,639 | 有料 | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-originality) |
| [QuillBot Paraphraser](https://openaitools.app/ja/tool/quillbot-paraphraser) | 36,630,337 | フリーミアム | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-quillbot-paraphraser) |
| [Copyleaks](https://openaitools.app/ja/tool/copyleaks) | 2,402,494 | 有料、料金は要問い合わせ | [比較](https://openaitools.app/ja/compare/copyleaks-vs-gptinf-com) |
| [Smodin](https://openaitools.app/ja/tool/smodin) | 251,633 | 有料 | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-smodin) |
| [AI Humanize](https://openaitools.app/ja/tool/ai-humanize) | 2,152,089 | フリーミアム、有料 | [比較](https://openaitools.app/ja/compare/ai-humanize-vs-gptinf-com) |
| [Humbot](https://openaitools.app/ja/tool/humbot-ai) | 325,940 | フリーミアム | [比較](https://openaitools.app/ja/compare/gptinf-com-vs-humbot-ai) |

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出典: https://openaitools.app/ja/tool/gptinf-com