⚡ 簡単な評価:
- 価格: Paperguide has a free plan and paid tiers from $12 per month, billed annually. CoWriter has no free tier, with Pro at $11.99/month and Premium at $23.99/month.
- 最適な用途: Paperguide suits researchers who read and cite academic papers. CoWriter suits writers who draft long articles on tight deadlines.
- 主な違い： Paperguide is an AI research アシスタント built around literature review and a reference manager. CoWriter is an AI writer built around drafting.
- 私たちのおすすめ： Paperguide for most students and academics, because it covers the whole research process rather than only the writing process.
A graduate 学生 with forty unread papers has a different problem than a blogger with three articles due Friday.
Both problems get sold the same fix: an AI writing tool.
CoWriter and Paperguide sit on opposite ends of that split.
One helps you create a draft fast. The other helps you read, chat with, and cite your sources first.
Picking wrong means paying for features you never open.
概要
This CoWriter vs PaperGuide comparison covers pricing, core features, and ease of use.
また、それぞれのツールがどのようなユーザーに最適なのかも詳しく解説します。
Our writer spent hands-on time with CoWriter directly.
Notes on Paperguide come from its documentation, pricing page, and G2 reviews.
By the end, you will know which one fits your research needs.
CoWriter とは何ですか?
CoWriter is an AI writer built for long-form drafting.
It gives you article ideas, outlines, and word suggestions as you write.
The outlines it builds look like long-form SEO articles for the web.
That makes it a fit for content marketers and small 仕事 所有者。
Students also use it to unstick ideas when a blank page will not move.
Here is what the interface looks like before we get into the details.
The walkthrough below shows the writing toolkit in action.
共著者
Built for people who publish on tight deadlines. Turns a topic into an outline, then a full draft.
共同執筆者の料金
CoWriter keeps its price list short. There are two paid tiers and no free tier.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| プロ | 月額11.99ドル | Solo writers wanting basic editing |
| プレミアム | 月額23.99ドル | Heavy users who want every Pro feature plus VIP support |
価格は2026年7月に確定しました。
無料トライアル: A free trial with limited features is available, so you can test output quality before you pay.
返金保証: No published refund window. Check the terms on the checkout page before you buy.
📌 注記： Pro covers the basic editing tool and caps you at 50 completion suggestions per day. Premium adds every Pro feature plus VIP treatment.
⚠️ Pricing conflict flagged: The rates above are the current published ones. Our archived source sheet still lists Pro at $20.00 and Premium at $385. Third-party research notes a $19 per month figure. Confirm the rate on the checkout page before you subscribe.
Key Benefits of CoWriter
Here is what makes CoWriter worth a look:
- Outline builder: Turns a topic into a full section map. This is where most of the speed gain comes from.
- Idea generation: Suggests angles when you are stuck. Good for beating a blank page.
- Custom styles and tones: Style corrections let you match a house 声. Helpful for self expression in a personal letter or a brand blog.
- AI detection proof mode: Aims to reduce how easily output reads as machine written. Human review is still needed.
- IEEE citation generator: Formats technical references without leaving the editor.
- Script and essay modes: Covers video scripts and academic content, not just blog posts.
私たちのチームが気づいたこと
Our writer signed up for CoWriter and spent several days drafting with it. Here is what stood out from that hands-on time:
CoWriter Pros & Cons
✅ メリット
- Outline builder speeds up long articles
- Idea generation helps you unstick ideas fast
- Custom tones support a consistent writing style
- Free trial lets you test output before paying
❌ デメリット
- Output can still be flagged as AI generated
- No free plan, only a limited trial
- No reference manager for research papers
Paperguide とは何ですか?
Paperguide is an AI research assistant for students, academics, and professionals.
It launched in 2023 and reports a user base of over 500,000.
The platform was previously ChatWithPDF, so chat with your sources sits at its core.
You upload papers, ask questions, and get AI generated summaries with key points.
It also handles the literature review process, citations, and academic writing.
It was named #1 Product of the Day on Product Hunt.
The video below walks through how the research process works end to end.
🏆 Winner: Paperguide
Read, chat with, and cite research papers in one place. Built for people who work from real sources.
ペーパーガイド価格
Paperguide offers four tiers, including a free plan. Annual billing sets the rates below.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 月額0ドル、年間請求 | Casual users testing the tools |
| プラス | 月額12ドル（年間請求） | 学生および個人研究者 |
| プロ | 月額24ドル（年間請求） | Heavy literature review workloads |
| 企業 | カスタムプラン | Labs, teams, and institutions |
価格は2026年7月に確定しました。
無料トライアル: A free plan and a free trial both exist. You can test it in your own research context first.
返金保証: No published refund window. The free tier is the safer way to trial it.
📌 注記： Higher tiers add unlimited references and unlimited storage. That matters if you handle a lot of academic papers.
⚠️ 警告： Every listed rate assumes annual billing. Monthly billing is not published on our source sheet, so check the site before you pick a date to renew.
Paperguideの主な利点
Here is what makes Paperguide worth considering:
- Chat with your sources: Upload papers and ask questions in plain language. You get deeper insights on complex topics without reading every page.
- AI search across real literature: It connects to academic databases such as Semantic Scholar. That gives easy access to reliable sources rather than invented ones.
- Reference manager: Folders, tags, and annotation tools keep references in order. It supports multiple file formats.
- Citation generator: Formats references in thousands of styles with AI assisted formatting.
- Built-in plagiarism checker: Runs originality checks inside the same platform.
- Chrome拡張機能： Puts the research tools in your browser while you read a paper on any site.
- 言語サポート: Works across multiple languages, which helps a global set of academics.
私たちのチームが気づいたこと
Note: We have not had extended hands-on time with Paperguide yet. The points above come from published documentation, the pricing page, and G2 reviews. We will update this section once our writers have logged real project hours.
Paperguideの長所と短所
✅ メリット
- Free plan covers the core research tools
- Chat with PDF answers questions from real papers
- Reference manager replaces a separate citation app
- Chrome extension works while you browse journals
❌ デメリット
- Listed prices assume annual billing only
- Weaker fit for marketing and blog drafting
- Enterprise pricing is not published
機能比較
Ready for the detailed CoWriter vs Paperguide breakdown? We cover ten features, then pricing.
The table below is the fast version. The sections after it explain each difference.
| 特徴 | 共著者 | ペーパーガイド |
|---|---|---|
| 開始価格 | $11.99/month (Pro) | 0ドル（無料プラン） |
| 無料プラン | ❌ | ✅ |
| PDFでチャット | ❌ | ✅ |
| Literature Review Tools | ❌ | ✅ |
| 参照マネージャー | ❌ | ✅ |
| 引用ジェネレータ | ✅ (IEEE) | ✅ (Thousands of styles) |
| 盗作チェッカー | ❌ | ✅ |
| アウトラインビルダー | ✅ | ✅ |
| AI Detection Proof Mode | ✅ | ❌ |
| Chrome拡張機能 | ❌ | ✅ |
| 最適な用途 | Fast long-form drafting | Source-based research |
1. AI Writing and Document Generation
共同執筆者: This is where CoWriter is strongest. You give it a topic and it produces an article structure, then fills it in. The writing process is built for speed, which suits people shipping content on tight deadlines.
ペーパーガイド: Full document generation exists here too, but it writes from papers you have already collected. That makes drafts easier to defend, though it is slower if you have no sources yet.
2. Outlines and Unsticking Ideas
共同執筆者: The outline builder and idea generator are the two features writers open most. Collaboration research shows a second perspective sparks new ideas, and an AIアシスタント plays a similar role here. It keeps your flow going, so the first few hundred words arrive instead of stalling.
ペーパーガイド: Deep research reports act as the outline stage. Instead of inventing a structure, it maps what the literature already says, then suggests where your argument fits.
3. Reading Papers and Chat With PDF
共同執筆者: There is no chat with PDF here. You paste in what you need and work from memory or notes. For blog work that is fine, but it limits how you process papers.
ペーパーガイド: Chat with PDF is the original feature, since the product was previously ChatWithPDF. Paperguide reads the file and answers questions about it. It can also pull summaries from ユーチューブ videos, which helps when a lecture covers complex topics.
⚠️ 警告： Chat answers still need checking against the original page. Treat every summary as a starting point, not a citation.
4. 文献レビュープロセス
共同執筆者: その エッセイライター can produce academic content, but it does not run a literature review. You would still need a separate tool to gather and screen studies first.
ペーパーガイド: A dedicated literature review workspace groups studies, compares findings, and drafts the synthesis. This is the single biggest gap between the two products.
5. Literature Search and Reliable Sources
共同執筆者: Script and article modes cover many formats, from a video script to a long guide. What they do not include is a literature search, so sources come from you.
ペーパーガイド: AI search queries academic databases such as Semantic Scholar. Because results come from indexed papers, you pull from multiple sources that actually exist.
6. Citation Generator and Reference Manager
共同執筆者: The IEEE citation generator covers technical and engineering work well. It stops there, so there is nothing to store or tag your references in afterwards.
ペーパーガイド: Its citation generator supports thousands of styles, and the reference manager stores everything in folders and tags. Compared with traditional reference managers, the draw is that reading, citing, and writing sit in one place. That is what efficient reference management looks like day to day.
7. AI Detection and Plagiarism Checks
共同執筆者: An AI detection proof mode tries to make drafts read as human written. Independent research still finds its output detectable, so human editing remains part of the job.
ペーパーガイド: The approach is the opposite. A free plagiarism checker verifies originality rather than hiding machine authorship, which fits academic submission rules better.
⚠️ 警告： Most universities require you to disclose AI use. A detection proof mode does not make undisclosed use acceptable.
8. Writing Styles, Tone, and Grammar
共同執筆者: Custom styles and tones let you set formal, casual, or persuasive output. Vocabulary suggestions improve word choice, which supports creativity rather than replacing it.
ペーパーガイド: Tone control is lighter, since the writing assistant targets academic prose. Auto cite papers handles the mechanical part so you can focus on argument and grammar.
9. Extract Data and Deeper Analysis
共同執筆者: There is no structured データ extraction. If a study hides its numbers in a table, you copy them out by hand.
ペーパーガイド: You can extract data from tables across a batch of papers into one grid. For a systematic review, this alone can save hours of manual copying.
10. Collaboration and Interface
共同執筆者: The editor is clean and quick to learn. It is built around one person drafting, so shared workspaces are not the point.
ペーパーガイド: A user friendly interface groups papers, notes, and drafts by project. Real time collaboration features let a lab share one library, and deep research reports can be handed to a co-author.
11. 価格設定とコスト
Here are the plans side by side.
| プラン | 共著者 | ペーパーガイド |
|---|---|---|
| 無料 | ❌（試用版のみ） | 月額0ドル、年間請求 |
| 入場料支払い済み | Pro: $11.99/month | Plus: $12/per month, billed annually |
| 上位層 | Premium: $23.99/month | Pro: $24/per month, billed annually |
| カスタム | ❌ | Enterprise Custom Plan |
共同執筆者: Two paid tiers and no free plan. Pro at $11.99 is the cheapest paid seat in this comparison, but it limits you to 50 completion suggestions per day. Premium at $23.99 lifts that and adds VIP support.
ペーパーガイド: Plus at $12 is a cent above CoWriter’s Pro tier, so the paid seats are effectively level. The free tier is what separates them, and Pro at $24 adds room for heavier workloads.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| 初期費用は一切かかりません | ペーパーガイド | Free plan, no trial clock |
| Fast blog drafts | 共著者 | Outline builder plus idea generation |
| A literature review | ペーパーガイド | Purpose-built review workspace |
| Citations in many styles | ペーパーガイド | Thousands of formats supported |
| IEEE-only citations | 共著者 | Dedicated IEEE generator |
| 初心者向けのセットアップ | ペーパーガイド | Free tier lowers the risk |
💰 あなたの予算
The paid tiers are within a cent of each other, so the free plan is the real gap. Paperguide lets you work at zero cost, while CoWriter bills from day one.
🔌 あなたの技術スタック
Paperguide’s Chrome extension follows you across journal sites. CoWriter lives in its own editor, which is simpler but less connected to the rest of your writing tools.
📝 あなたの文章スタイル
Marketing prose rewards tone control, which CoWriter handles well. Academic prose rewards accurate sourcing, which is Paperguide’s whole design.
🎓 あなたの経験レベル
Undergraduates and 教師 running assignments get more from a free research workspace. Experienced content writers already know their structure and mainly want speed.
🆓 無料トライアルとデモ
Run one real assignment through each before you commit. A trial tells you more about fit than any feature list, including this one.
🛟 サポートオプション
Neither publishes phone support. Paperguide’s larger user base means more community answers when you hit a wall. Paid tiers usually get 早い 新機能へのアクセス。
切り替えガイド
Already paying for one of them? Here is what changes if you move.
🔄 Switching from CoWriter to Paperguide?
✅ 得られるもの：
- A reference manager with folders, tags, and unlimited storage on higher tiers
- Chat with PDF and AI search across real academic papers
- A free plan, so you stop paying while you decide
❌ 失うもの：
- The AI detection proof drafting mode
- Script generation for video and marketing formats
- Fine-grained tone and style presets
📋切り替え方法：
- Export your finished drafts and saved outlines from CoWriter
- Create a Paperguide account on the free plan
- Upload papers into a project folder and rebuild your citation list
🔄 Switching from Paperguide to CoWriter?
✅ 得られるもの：
- Faster first drafts when you already know the topic
- Style and tone presets for brand or client work
- A script generator for video and short-form content
❌ 失うもの：
- Chat with PDF and the literature review workspace
- The plagiarism checker and multi-style citation generator
- Your organised library of references
📋切り替え方法：
- Export your reference library and annotations from Paperguide
- Start CoWriter’s free trial before cancelling anything
- Rebuild one article end to end to confirm the fit
私たちのレビューで取り上げられなかったこと
This comparison focused on individual students, researchers, and solo writers. We did not evaluate institutional licensing, API access, or how either platform behaves with a hundred-person team. Our notes reflect the July 2026 versions of both products, and AI powered tools change quickly. If your future workflow depends on a specific database or referencing standard, confirm support directly before you buy.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | ペーパーガイド |
| 📚 Research Tools | ペーパーガイド |
| ⚡ドラフトスピード | 共著者 |
| 🎯 Citations | ペーパーガイド |
| 👶 使いやすさ | ペーパーガイド |
| 🔌 連携機能 | ペーパーガイド |
| 🏆総合優勝 | ペーパーガイド |
🏆 WINNER: PAPERGUIDE
Paperguide wins 5 out of 6 categories.
最適な用途: literature review work, citation-heavy academic writing, and anyone who needs to read and process papers before drafting
These two products answer different questions. CoWriter asks how fast you can produce a draft. Paperguide asks whether the draft is supported by real papers.
CoWriter is the better buy for content marketers and publishers working against tight deadlines. Its outline builder and tone presets earn their keep on volume work.
For students, researchers, and academics, Paperguide covers far more of the job. A free plan, a reference manager, and source-grounded answers make it the safer starting point.
Some buttons on this page use an affiliate link. That supports our work and costs you nothing extra.
More of CoWriter Compared
Here is how CoWriter measures up against other drafting tools:
共同執筆者対 ジェニー
CoWriter wins on: tone and style presets, script generation for video, IEEE-specific citation formatting
ジェニが勝利した点： inline autocomplete while you type, a free daily word allowance, wider citation style coverage
共同執筆者対 ライトソニック
CoWriter wins on: a simpler editor, long-form outline depth, an academic essay mode
Writesonicが勝利した点： template variety for ads and product copy, brand 声 training, bulk generation
共同執筆者対 フレーズ
CoWriter wins on: lower entry price, faster first draft, less setup before you start
フレーズが勝利した理由： SERP analysis before drafting, content briefs for teams, on-page scoring
Paperguideの比較をもっと見る
Here is how Paperguide stacks up against other research platforms:
ペーパーガイド対 引き出す
Paperguideが受賞した点： document summaries, video summarisation, a built-in writing surface for the final draft
Elicitが勝利を収める条件： structured screening workflows, systematic review tooling, tighter focus on empirical studies
ペーパーガイド対 サイスペース
Paperguideが受賞した点： reference organisation with folders and tags, broader citation style support, a plagiarism checker included
SciSpaceが勝利した点： paper explanation for beginners, a larger indexed corpus, paper-to-paper concept linking
ペーパーガイド対 ペーパーパル
Paperguideが受賞した点： source discovery, reading and chat features, a usable free tier
Paperpalが勝利した点： language editing for non-native writers, journal submission checks, manuscript formatting
よくある質問
共同執筆者（cowriter）ですか、それとも共同執筆者（co writer）ですか？
Both spellings exist, for different products. CoWriter is the AI drafting tool at cowriter.ai. Co:Writer, with a colon, is a separate accessibility app from another company.
CoWriterは何をするものですか？
It turns a topic into ideas, an outline, and a full draft. It also adds style presets, an IEEE citation generator, and a detection proof mode.
CoWriter AIは無料ですか？
No. A free trial with limited features exists, but both tiers are paid. Pro costs $11.99 per month and Premium costs $23.99 per month.
PDFファイルと会話できるAIとは何ですか？
Paperguide, which was previously ChatWithPDF. You upload a document and ask questions in plain language, then get answers and summaries drawn from that file.
AIを使って研究論文を書くにはどうすればいいですか？
Gather real sources first, then draft. Paperguide covers search, review, and citations in one place. Check every claim against the original paper before submitting.
English 
Spanish 
Chinese 
German 
French 
Arabic 
Russian 
Portuguese 
Japanese 
Korean 
Italian 
Turkish 
Dutch 
Polish 
Indonesian 
Thai 
Vietnamese 