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Claude
OpenAI

AIテキストを人間らしく — あなた自身の声で。

AIで下書きした文章を、意味を保ったまま明確で自然な文章にします。提出前に、無料のAI検出器でどのテキストも確認できます。

クレジットカード不要

SupWriterは文章作成ツールです。AIの利用については、学校や雇用主の規則に従ってください。

JKSMALRWMC

世界中の9,000人以上の書き手に使われています

主要なAIモデルの出力すべてに対応

  • ChatGPT
  • Claude
  • Gemini
  • DeepSeek
  • Llama
  • Copilot
  • Grok
  • Perplexity

世界中の9,000人以上の学生、研究者、コンテンツ執筆者に信頼されています

すべての ライターのために

学術論文からビジネス文書まで、SupWriterはAI生成テキストをあなたの個性が表れた本物の文章に変換します。当社のヒューマナイザーは業界やユースケースに合わせて適応し、毎回自然な仕上がりをお届けします。

学生

自然に書き、自信を持って提出

AIで下書きした文章を、自分の声の明確な学術文にします。学生と英語を母語としない書き手向け。

詳しく見る

SEO・コンテンツチーム

コンテンツを量産しても、あなたらしさはそのまま

優秀なライターが手がけたかのように読める大量のコンテンツを制作できます。SupWriterはAIの下書きを、読者の信頼を築き、検索エンジンの品質ガイドラインに沿った、魅力的で人間品質の文章に変換します。

詳しく見る

ビジネスパーソン

機械的ではなく、洗練された印象に

顧客への提案書から社内メモまで、あらゆるビジネスコミュニケーションがあなたのプロフェッショナルな個性を反映するようにします。SupWriterはAI生成テキストを磨き上げ、メール・レポート・プレゼンが相手に本心から伝わるようにします。

詳しく見る

教育者・トレーナー

魅力的な教材を作成

学習者の心に響く授業計画・研修ガイド・教育コンテンツを作成できます。SupWriterはAIで作成した教材を、生徒一人ひとりのために手がけたような、温かく魅力的なリソースに変換します。

詳しく見る

法務・コンプライアンス

正確さと自然さの両立

正確さを保ちながら自然に読める契約書・準備書面・法的文書を作成できます。SupWriterはAIで作成した法的文章が、専門的な正確さを保ちつつ、クライアントが期待する威厳のあるトーンを損なわないようにします。

詳しく見る

研究者・学者

自信を持って発表

研究論文・助成金申請書・学術出版物を、厳格な学術基準を満たすよう磨き上げます。SupWriterはAIで作成した文章が学術的誠実さを保ちつつ、あなたの専門知識を明確に伝えられるようサポートします。

詳しく見る

コンテンツクリエイター、フリーランサー、専門家向けのソリューションをさらに見る。

Everything in one tool

Write like a human. In your own voice.

Humanize, detect, paraphrase and grammar-check in one workspace — plus an API and MCP connector to take it everywhere else.

Languages
50+

Languages

Free words
300

Free words

Writers
9,000+

Writers

Included
API · MCP · CLI

Included

Check your draft with the built-in AI detector before you submit. Results vary by detector; no tool can guarantee a result.

Advanced Editor

Everything in one workspace

Humanize, paraphrase, grammar-check and detect AI on one page — with your history and credits always in view.

AI Detection

Check a draft before you submit

AI detector with sentence-level highlights. The rows below are a per-label guide based on one AI score.

Humanization

Reads like a person wrote it

Rewrites ChatGPT, Claude, and Gemini drafts into your own voice, including clearer English for non-native writers.

CasualFormalAcademicBeast Mode
Multilingual

50+ languages

Humanize, paraphrase and grammar-check in 50+ languages — from English and Hindi to Japanese and Arabic.

Paraphraser

Five ways to rephrase

Rewrite any sentence while keeping its meaning — pick the mode that fits your audience.

Grammar

Three grammar modes

Basic, Thorough or Style — from a quick spell-check to a full readability rewrite.

Content types

16 content types

Tuned for essays, emails, blog posts, research papers, cover letters and more.

MCP & API

Use SupWriter inside your AI tools

Humanize, detect, paraphrase and grammar-check without leaving the apps you already use.

  • Add SupWriter as an MCP connector in Claude & ChatGPT
  • Use it in Cursor, VS Code & any MCP client
  • Or call the REST API from your own code
Claude
OpenAI
Inline AI

Fix any selection inline

Highlight any sentence to improve it, fix grammar, or shorten — right where you write.

提出前に下書きを確認

提出前に、SupWriterのAI検出ツールで下書きを確認しましょう。単一のスコアリングモデルに基づく事前チェックで、学校やクライアントが使う検出ツールではないため、スコアは目安としてご利用ください。結果を保証できるツールはありません。

SupWriter includes an AI detector so you can check a draft before you submit. It is a pre-check based on one scoring model, not the detector your school or client uses. Results vary by detector, text length and topic, and no tool can guarantee a result. How we test AI detectors

Detectors schools and clients use. SupWriter doesn't query them.
ZeroGPT logo
ZeroGPT
Copyleaks logo
Copyleaks
Turnitin logo
Turnitin
QuillBot logo
QuillBot
GPTZero logo
GPTZero
GrammarlySaplingOpenAIClaudeGeminiGrok

Use the built-in AI detector (free on paid plans) to review a draft before you submit. A score is an estimate, not a guarantee.

What SupWriter includes

提出前に、SupWriterが意味と声、そして下書きの読みやすさをどう保つかをご覧ください。

Check your draft with the built-in AI detector before you submit. Results vary by detector; no tool can guarantee a result.

機能SupWriter
Natural voiceYour own
多言語対応50+
AI検出ツール内蔵One scoring model
選択範囲の修正
無料トライアル300 words once
追加クレジットを購入

Reviews

ユーザーの声

SupWriterについてのライターの声

I've been using SupWriter for weeks, and it's become essential to my academic writing and research workflow. As a Ph.D. student in environmental law, I'm constantly drafting, refining, and translating complex texts, and SupWriter makes the whole process far more efficient and less stressful.

HE
Henrry
Ph.D. Candidate

It's so great and I love this app. Everyone should use it. It helped me pass my essay!

BH
Braxton H.

What impressed me most is how seamlessly SupWriter polishes my drafts. My clients noticed the difference in quality and tone immediately.

BL
Brandon L.
Freelancer

Absolutely wonderful. The best AI humanizer I've used, especially for scientific writing.

PB
Phoebe B.
Student

This tool lets me do so many things faster, and its features are genuinely useful.

KA
Karima

Really good. I didn't expect it to be this great. It genuinely enhanced my writing. Give it a try.

CA
Chris A.
Researcher

This product is so good. I'll choose it over and over again. It has my heart. ❤️

Rachel A.
Rachel A.
Student

The Fix Selection feature is a game changer. I can select any text and improve it, fix the grammar, or make it shorter, and my content workflow has never been faster.

AM
Aisha M.
Content Writer

Excellent service, really helpful for job applications, and it even has an AI detector. I'd highly recommend it to students, professors, and writers. An amazing writing tool.

SW
Shania W.

It was amazing. I upgraded, and since then my work has consistently scored high marks.

EH
Enzo H.
Student

The best humanizer ever.

Nikolay
Nikolay

It was great, especially in a foreign language. It helped the adjectives come out smoother than I expected!

Christina P.
Christina P.
Writer

I'm on the Ultra Monthly plan and bought $20 in extra credits. This platform is super good, and I'm planning to switch to the Yearly plan soon.

RO
Ron
Ultra plan user

Precisely written and a very nice app. I recommend everyone give it a try.

RS
Riya S.
Student

I was amazed to see the AI-flagged text identified so accurately. It really helps crack down on AI interventions.

Radhakrishnan
Radhakrishnan

My professor commended the uniqueness of my essay after I used SupWriter to make it sound natural. Strongly recommended for students!

MD
Marco D.
Student

The website is fantastic. It's clean, modern, and visually appealing. Navigation is intuitive, pages load fast, and everything works well on desktop and mobile. A smooth, enjoyable experience. I'm really impressed!

KO
Korsmann
Student

It's been a great tool to use, and very helpful.

AD
Adrianne

My experience with the AI detector was great. The interface is simple and easy to navigate, and results came back quickly with useful detail.

KA
Kareem
Student

This experience has been amazing, and the service is extremely helpful.

MA
Marshall

My experience was amazing. SupWriter is very easy to use, and it actually works!

DF
Domenico F.
Student

Impressed by the quality, and cheaper than other platforms.

ST
Steve

SupWriter is great. It helps me become a better writer and a better student overall.

KL
Kal
Student

よくある質問

SupWriterに関するよくある質問

AIの助けを借りて書いた下書きを貼り付け、言語・トーン・目的を選ぶと、SupWriterが意味を保ったまま文章をより自然に書き直します。提出前に、内蔵のAI検出ツールで結果を確認してください。
今すぐ始める

自信を持って書く 準備はできていますか?

学生と英語を母語としない書き手が、SupWriterでAIの下書きを自分の声の明確な文章にしています。

クレジットカード不要 • 無料プランあり • いつでも解約可能