Cowriter vs Grammarly: 2025 年のベストコンテンツ最適化ツール?

執筆者 | 最終更新日 Sep 3, 2025

勝者
共著者
4.5
  • AI Detection Proof
  • 引用ジェネレータ
  • Outline Builder
  • Custom Writing Styles
  • Idea Generator
  • Fast-Track Support
  • Paid Plans from $11.99
準優勝
grammmarly
3.5
  • AI Writing Tools
  • 文法チェッカー
  • 盗作チェッカー
  • AI Detector
  • Paraphrasing Tool
  • 無料プランあり
  • 有料プランは月額12ドルから
Cowriter vs Grammarly

Struggling to 作る your Writing shine? You’re not alone! These days, everyone from students to CEOs needs to create top-notch content.

That’s where AI writing tools come in. Two of the biggest names are Cowriter vs Grammarly.

But which one reigns supreme in 2025?

In this head-to-head, we’ll break down their features, pricing, and ease of use to help you choose the perfect writing companion. 

Get ready to supercharge your Writing and leave your readers impressed!

概要

We’ve spent weeks testing both Cowriter and Grammarly to give you the most accurate comparison.

We’ve used them for various writing tasks, including emails, articles, ソーシャルメディア posts, and creative stories.

This hands-on experience gives us unique insights into their strengths and weaknesses.

共著者CTA
4.55点満点中

Want to write 5X faster? Try CoWriter today! Our users report boosting their writing speed by over 300%. Start your free trial and see for yourself!

価格: It has a Free Plan. Paid Plan Starts at $11.99/month.

主な特徴:

  • Grammar & Style Checker
  • Sentence Rewriter
  • Paraphrasing Tool
文法CTA
3.55点満点中

Over 30 million users and 50,000+ businesses trust Grammarly to enhance their communication. Start your free trial today!

価格: You can try it for free. Paid plan starts at $12/month

主な特徴:

  • Grammar and Spelling Checker
  • Plagiarism Detector
  • Tone Suggestions

What is a Cowriter?

Have you ever felt stuck staring at a blank page? CoWriter is like having a ブレインストーミング buddy right on your computer.

It helps you generate ideas, write content, and repurpose old stuff.

Think of it as your AI assistant for all things writing. Pretty cool, right?

また、私たちのお気に入りを探索してください CoWriter alternatives

共著者のホームページ

私たちの見解

共著者CTA

CoWriterは、ライティングサポートが必要な方にとって貴重なツールです。ディスレクシアやその他の学習障害のある方にも役立ちます。しかし、上級レベルの方には最適な選択肢ではないかもしれません。 作家 または研究者。

主なメリット

  • スペル、文法、句読点に関するリアルタイムのサポートを受けられます。
  • 文章の流暢さと正確さを向上させます。
  • 作家としての自信を築きましょう。
  • さまざまな便利なライティング ツールにアクセスできます。

価格

CoWriter では、無料トライアルと、ニーズに応じたさまざまなサブスクリプション オプションを提供しています。

  • プレミアム: 月額 23.99 ドル – プロ プランの全機能、VIP 待遇。
  • Pro: 月額 11.99 ドル – 基本編集ツール、1 日あたり 50 件の完成提案。
共著者の料金

長所

  • 生産性の向上
  • 創造性の向上
  • 精度の向上
  • 多用途なアプリケーション
  • カスタマイズ可能なライティングスタイル

短所

  • 過度の依存
  • 精度の限界
  • 倫理的な懸念
  • プライバシーに関する懸念
  • 限られた創造性

What is Grammarly?

Want to write like a pro? Grammarly is your go-to tool. It’s like having a super-smart editor reading everything you write.

Grammarly catches those pesky typos and grammar mistakes we all make.

But it does so much more than that! It also helps you improve your writing style and clarity.

また、私たちのお気に入りを探索してください Grammarlyの代替品

Grammarlyの紹介

私たちの見解

文法CTA

プロレベルの文章をお望みですか?Grammarly Premiumの剽窃チェッカーは160億以上のウェブページをスキャンし、オリジナリティを保証します。今すぐお試しください!

主なメリット

  • 正確さ: 強力な AI 検出を提供し、多くの場合 90 ~ 92% 程度です。
  • 誤検知: 低い誤検出率(通常は 5% 未満)を維持します。
  • 保証: 標準のサブスクリプション条件が適用されますが、特定の保証はありません。
  • Features: AI 検出を文法およびスペル チェックと統合し、盗作検出機能を提供し、リアルタイムのフィードバックを提供し、ブラウザー拡張機能として利用可能で、全体的な文章品質の向上に役立ちます。

価格

すべての計画は 毎年請求されます。

  • Free: 月額0ドル。
  • Pro: 月額12ドル
  • 企業: ニーズに応じて価格をカスタマイズします。
Grammarlyの価格

長所

  • 多くのエラーをキャッチします。
  • 使いやすいです。
  • どこでも動作します。
  • 文章力が向上します。
  • 自信を築きます。

短所

  • 高価になる場合があります。
  • いつも完璧というわけではありません。
  • 過剰修正することがあります。
  • 限定無料版です。

機能比較

Let’s dive deeper into how Cowriter and Grammarly stack up on specific features.

Understanding these differences will help you pick the best tool for your unique needs and boost your content creation game.

1. Word Prediction

Both tools offer some form of word prediction, helping you type faster and keep your ideas flowing.

  • Cowriter: Provides “neuron word prediction” and “unlimited completion suggestions” to help you unstick ideas and speed up the writing process. It focuses on helping you generate 제니 vs 라이트소닉: 2025년 최고의 AI 작가 7.
  • 文法: Offers smart word prediction to help complete your sentences as you type. It focuses more on accuracy and efficiency in your general writing.

2. Speech Recognition (Speech-to-Text)

The ability to speak your thoughts and have them typed can be a huge time-saver.

  • Cowriter: Information regarding a native speech recognition or speech-to-text feature for Cowriter is not prominently available.
  • 文法: Does not have a built-in speech-to-text feature. You would typically use your device’s native speech recognition or a third-party tool for this.

3. Grammar and Style Corrections

This is where Grammarly truly shines, though Cowriter also offers support.

  • Cowriter: Includes grammar and style corrections as part of its writing toolkit. It aims to help you クラフト error-free original text.
  • 文法: Excels with its “grammar smart” capabilities, providing comprehensive spelling and grammar checking, along with style corrections. It’s designed to help you enhance your writing skills significantly.
cowriter citation generator

4. AI Detection

With the rise of AI-generated content, detecting it has become a concern for many.

  • Cowriter: Promotes an “AI detection proof” feature to ensure your AI-generated content appears human-written. This is particularly useful for those on tight deadlines who want to avoid being flagged.
  • 文法: While it uses artificial intelligence for its suggestions, some users have reported that text processed through Grammarly can sometimes be flagged by AI detectors. Grammarly’s focus is on improving human writing, not making AI content undetectable.

5. Translation Support

The ability to translate content can be crucial for a global audience or for research.

  • Cowriter: Does not explicitly list robust translation support as a core feature.
  • 文法: Does not offer built-in translation features. Its focus is on English writing, with support for various English dialects.

6. Text-to-Speech Feature (Text Read Aloud)

Hearing your text read aloud can help you catch errors and improve flow.

  • Cowriter: Details on a dedicated text-to-speech feature are not readily available.
  • 文法: Does not natively offer a text-to-speech feature within its core product. You’d typically rely on your operating system’s or browser’s built-in text read aloud functions.

7. Integrations and Platforms

Seamless integration with your existing workflow is key for any online writing tool.

  • Cowriter: Integrates with platforms like Google Docs. It’s a tool that helps you generate and refine text within your workflow.
  • 文法: Offers wide-ranging integrations, including a Chrome extension, add-ins for Microsoft Word and Microsoft Office, and compatibility across various web browsers like Microsoft Edge. This makes it a very flexible tool for writing across the web.
Grammarly plagiarism checker

8. Topic-Specific Dictionaries and Vocabulary

Enhancing vocabulary and ensuring topic relevance is important for quality content.

  • Cowriter: Focuses on helping you with content creation and can assist with finding relevant vocabulary through its generative AI. It aims to boost your creativity.
  • 文法: Offers vocabulary enhancement suggestions and can help you maintain consistency with a style guide, which can include specific terminology for academic or professional writing. It aims to enhance writing quality and flow.

9. Early Access to New Features

Staying updated with new features can give users an edge.

  • Cowriter: Offers “early access to new features” as part of its higher-tier plans, allowing users to experience the latest AI technology.
  • 文法: Regularly releases new features and updates to its premium version, ensuring users have access to cutting-edge AI writing assistance to speed up the writing process and get better results.

What to Look for When Choosing a Content Optimizer?

  • Your Writing Needs: Think about what you struggle with most when writing. Do you need help generating ideas? Or is grammar and clarity your main concern?
  • Content Goals: Consider the types of content you create. Do you write articles, social media posts, emails, or other types of content?
  • 予算: Free tools might be enough for basic needs, but premium features often require a subscription.
  • Ease of Use: Choose a tool with an intuitive interface and features that fit seamlessly into your workflow.
  • 具体的な特徴: Based on your needs, consider features like plagiarism detection, tone suggestions, and content repurposing tools.
  • Trial Periods: Use free trials to test different tools before committing to a subscription.
  • ユーザーレビュー: See what other users say about their experiences with different content optimization tools.

最終評決

So, who wins the battle of AI writing assistants? It’s a close call, but 共著者 takes the crown. Why?

Because it’s an all-around powerhouse for improving your Writing. 

Cowriter’s AI detects errors, enhances clarity, and helps you find the perfect tone. Its free plan gives you a taste of its excellent features.

Need more convincing? We’ve spent years testing AI writers like Grammarly, 碧玉, and Cowriter.

We know what works and what doesn’t. Whether you’re writing emails, essays, or social media posts, Cowriter consistently delivers better results.

Need help with specific writing tasks? Cowriter might be a good fit.

However, for general writing that’s polished and error-free, the cowriter is the clear winner.

It’s the best AI writing assistant for enhancing your Writing on platforms such as Google Docs, MS Word, and others.

More of CoWriter

  • CoWriter vs Paperpal: Paperpal is tailored for academic refinement, whereas CoWriter offers broader AI writing assistance, including essay composition and idea generation.
  • CoWriter vs Yomu: Yomu helps users understand research papers by offering summarization, while CoWriter serves as a more versatile AI writing assistant for varied content needs.
  • 共同執筆者 vs Jenni: Jenni excels in content generation with research integration, while CoWriter emphasizes refining existing text and improving writing confidence.
  • CoWriter vs Writesonic: Writesonic specializes in diverse content formats with a strong marketing focus, while CoWriter emphasizes long-form content creation and overcoming writer’s block.
  • CoWriter vs Frase: Frase assists with SEO-optimized content creation and research, whereas CoWriter is designed as a more general AI writing tool for different writing tasks.
  • CoWriter vs Elicit: Elicit directly answers research questions from papers, contrasting with CoWriter’s function as an AI aid for the writing process itself.
  • CoWriter vs SciSpace: SciSpace helps understand and analyze scientific papers, unlike CoWriter, which is built to assist in the creation of various written content.
  • CoWriter vs Scite: Scite evaluates research reliability through citation analysis, a function different from CoWriter’s writing enhancement capabilities.
  • CoWriter vs Quillbot: Quillbot primarily paraphrases and summarizes text, while CoWriter offers a wider range of AI writing assistance features.
  • CoWriter vs Grammarly: Grammarly focuses on grammar, spelling, and style checking, whereas CoWriter provides broader writing support, including content generation.
  • CoWriter vs Paperguide: Paperguide simplifies complex research concepts and aids literature review, differing from CoWriter’s role as a general AI writing assistant.

More of Grammarly

  • Grammarly vs Paperpal: Grammarly offers general writing enhancement, whereas Paperpal is tailored for academic text refinement.
  • Grammarly vs Jenni: Grammarly focuses on refining existing text for correctness, while Jenni AI aids in generating content from scratch.
  • Grammarly vs Yomu: Grammarly excels in grammar and style checks, while Yomu assists with idea generation and contextual feedback.
  • Grammarly vs Writesonic: Grammarly is strong in grammar and plagiarism checks, but Writesonic specializes in creative content generation.
  • Grammarly vs Frase: Grammarly perfects grammar and style, whereas Frase is built for content creation and SEO optimization.
  • Grammarly vs CoWriter: Grammarly helps refine writing, while CoWriter aims to streamline research and the writing process.
  • Grammarly vs Elicit: Grammarly improves writing quality, but Elicit directly answers research questions from papers.
  • Grammarly vs SciSpace: Grammarly enhances writing, while SciSpace helps understand and analyze scientific papers quickly.
  • Grammarly vs Scite: Grammarly checks writing reliability, but Scite evaluates research citation context.
  • Grammarly vs. Quillbot: Grammarly focuses on grammar and style, whereas Quillbot specializes in paraphrasing and summarizing.
  • Grammarly vs Paperguide: Grammarly assists in writing improvement, while Paperguide simplifies research concepts and aids review.

よくある質問

Is Grammarly’s free version good enough?

The free version of Grammarly is excellent for basic spelling and grammar checking. But for advanced features like tone suggestions, plagiarism detection, and style guides, you’ll need the premium version.

Can Grammarly help me with content creation?

While Grammarly isn’t designed to generate long-form content, its AI features can help you enhance your Writing. It offers suggestions to improve sentence structure, clarity, and overall style.

How does Grammarly work with Microsoft Word and Google Docs?

Grammarly integrates seamlessly with popular writing platforms like MS Word and Google Docs. You can use it via a browser extension or add-in to check your Writing in real-time.

What is Grammarly Business, and who is it for?

文法 仕事 is designed for teams and organizations. It includes all the premium features plus tools to ensure brand consistency and streamline workflows. Organizations that deploy Grammarly save time and resources by improving writing quality.

Can I use Grammarly on my phone?

Yes! Grammarly offers a keyboard app for iOS and Android, allowing you to use its spelling and grammar-checking features while writing on your phone.

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