⚡ 簡単な評価:
- 価格: Writesonic starts at $39 (Lite). CoWriter starts at $11.99/month (Pro).
- 最適な用途: Writesonic suits marketing materials and bulk content generation. CoWriter suits academic and long form content.
- 主な違い： Writesonic bundles search tools like keyword research and content gap analysis. CoWriter skips those and focuses on drafting.
- 私たちのおすすめ： CoWriter for most solo writers, based on its 3.8 rating and lower entry price.
The cheaper AI writing tool here is not the weaker one.
CoWriter costs less per month than Writesonic.
It also scores higher in our ratings.
But price is the smallest difference between these two AI writers.
One is built for search engines. The other is built for the writing process itself.
概要
This Writesonic vs Cowriter comparison covers pricing, key features, and content quality.
また、それぞれのAIライティングアシスタント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。
弊社のライター陣は、両方のツールを実際に使ってみました。
それらのメモは、以下の「チームが気づいたこと」のセクションに記載されています。
The rest draws on published specs, documentation, and G2 reviews.
Writesonicとは何ですか?
Writesonic is an AI writing tool that launched in 2020.
It handles blog articles, ad copy, product descriptions, and ソーシャルメディア 投稿。
The platform pairs writing with search tools like keyword research.
Chatsonic, its AI chat assistant, adds market and competitor research.
Photosonic makes images. Audiosonic handles 声 コンテンツ。
Most people pick it for bulk content generation across many channels.
その ピッチ is a faster content creation process, not hands-off content creation.
Here is a walkthrough of the platform in action.
ライトソニック
One dashboard for blog content, marketing materials, and website content. Chat tools and search data sit beside the editor.
Writesonicの価格設定
Here is what a Writesonic subscription costs in 2026.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| ライト | $39 | ツールをテストするソロブロガー |
| 標準 | $79 | フリーランサー with steady client work |
| 教授 | $199 | 小規模なマーケティングチーム |
| 高度な | $399 | Agencies running bulk content generation |
| 企業 | カスタム価格設定 | Large teams needing custom data retention |
価格は2026年7月に確定しました。
無料トライアル: Writesonic offers a free plan with a monthly word cap and a one-user limit.
返金保証: Refunds are handled case by case through support, not by an automatic window.
📌 注記： Higher plans unlock AI visibility tracking, automated internal linking, and custom data retention. Lower plans cap seats and monthly credits.
⚠️ Pricing conflict: Third-party write-ups still quote older Writesonic tiers near $19 per month. Our table uses the current figures. Check the pricing page before you buy.
Key Benefits of Writesonic
Here is what makes Writesonic worth a look:
- AI Article Writer 6.0: Turns a topic prompt into fact-checked drafts up to 5,000 words. It builds H1, H2, and H3 outlines first.
- Search data built in: Keyword research, an SEO checker, and content gap analysis sit in the same dashboard. It also connects to Google Search Console.
- Brand voice training: You can train the ai model on your brand’s tone. That keeps messaging steady across writers.
- Wide template library: Templates cover Google Ads, email sequences, a ユーチューブ title generator, and landing pages.
- 25+ languages: You can generate content for global audiences without a second tool.
- Compliance coverage: Writesonic holds SOC 2 Type II, GDPR, and HIPAA certification. That matters in regulated industries.
- Publishing and apps: One-click WordPress publishing plus ザピエール, Google Docs, Slack, and HubSpot links. A Chrome extension lets you write content inside Gmail or LinkedIn.
Here is how those benefits look inside the dashboard.
私たちのチームが気づいたこと
Our writer signed up for Writesonic and ran several blog drafts through it. Here is what stood out from that hands-on time:
Writesonic Pros & Cons
✅ メリット
- Writing and search tools live in one dashboard
- 無料プランでは、料金を支払う前に試用できます。
- Templates cover ads, emails, and product descriptions
- SOC 2 Type II, GDPR, and HIPAA certified
- Clean user interface that beginners pick up fast
❌ デメリット
- Output can read robotic without human editing
- G2 reviews flag slow support and billing issues
- Entry price is nearly double CoWriter’s Pro plan
- Best features sit behind the top tiers
CoWriter とは何ですか?
CoWriter is an AI writing assistant built for long form content.
It gives you content ideas, outlines, and full drafts.
The outlines look like real SEO article structures, not loose notes.
It also carries a citation generator and an AI detection proof mode.
That mix suits students, academic writers, and small publishers.
Most buyers are people writing on tight deadlines.
This video walks through the editor step by step.
⚠️ Name confusion: CoWriter (cowriter.ai) is not Co:Writer Universal from Don Johnston. That second product is an accessibility writing toolkit for Chrome, Edge, and iOS. It uses grammar smart and vocabulary smart word prediction to offer word suggestions as students type. Its neuron word prediction reads context, and topic specific dictionaries cover millions of subjects.
Co:Writer Universal also adds speech recognition, speech to text, flexible spelling for inventive spelling, translation support, and a text to speech feature that gets text read aloud on the page. 教師 use it inside Google Classroom, Google Docs, and Microsoft Word to help kids who struggle with dysgraphia or dyslexia speak their ideas and build self expression. This comparison covers cowriter.ai only.
🏆 Winner: CoWriter
Our top pick for academic and long form writing. Outline builder, citation generator, and style controls in one page.
共同執筆者の料金
CoWriter keeps its plan menu short. Two paid tiers, no free tier.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| プロ | 月額11.99ドル | Solo writers who need 50 suggestions a day |
| プレミアム | 月額23.99ドル | Heavy users who want unlimited completion suggestions |
価格は2026年7月に確定しました。
無料トライアル: A limited trial lets you test the editor before you pay. Both listed tiers are paid.
返金保証: No published refund window. Cancel from the billing page to stop the next charge.
📌 注記： Pro is the basic editing tool and caps you at 50 completion suggestions per day. Premium keeps every Pro feature, lifts that cap, and adds VIP handling plus 早い 新機能へのアクセス。
⚠️ Pricing conflict: Older listings still show CoWriter at $20.00 and $385. Our table uses the current 2026 rates. Confirm the figure on the billing page before you buy.
Key Benefits of CoWriter
Here is where CoWriter earns its 3.8 rating:
- Outline builder: It maps a full article structure before you write a single letter. Writers learn faster when the shape comes first.
- IEEE citation generator: Citations are built into the draft flow. That saves academic writers a separate reference tool.
- AI detection proof mode: It rewrites drafts to reduce AI detection flags. Human review is still needed for accuracy.
- Research paper support: The research paper generator handles structured academic work, not just blog posts.
- Custom styles and tones: You can lock a specific writing style so drafts match your voice. Style corrections run as you edit.
- Idea generation: Prompts unstick ideas when a blank page kills your creativity.
- Script writing: The AI script generator covers video and podcast work alongside articles.
Here is a closer look at those benefits on screen.
私たちのチームが気づいたこと
Our writer used CoWriter for a week of drafting and outlining. Here is what stood out:
CoWriter Pros & Cons
✅ メリット
- Entry plan costs under a third of Writesonic Lite
- Built-in citation generator for academic work
- Outline builder shapes long form content fast
- Custom writing styles keep drafts on tone
- Short plan menu makes the choice simple
❌ デメリット
- Output is still detectable as ai generated content
- No keyword research or search console link
- Premium doubles the Pro price for VIP handling
- Name clashes with a well-known accessibility app
機能比較
Now let’s look at the key features side by side. We compare eight areas, then pricing.
| 特徴 | ライトソニック | 共著者 |
|---|---|---|
| 開始価格 | $39 (Lite) | $11.99/month (Pro) |
| 無料プラン | ✅ | ❌ |
| AI記事ライター | ✅ | ✅ |
| キーワードリサーチ | ✅ | ❌ |
| コンテンツギャップ分析 | ✅ | ❌ |
| 引用ジェネレータ | ❌ | ✅ |
| AI Detection Handling | ✅ ヒューマナイザー | ✅ Detection Proof |
| Image and Voice Tools | ✅ | ❌ |
| 最適な用途 | Marketing and SEO content | Academic and long form content |
1. Long Form Article Writing
ライトソニック: The ai article writer asks what kind of piece you want first. It then runs in depth research on competitors and keywords before drafting. Version 6.0 can write articles up to 5,000 words in minutes.
共同執筆者: その エッセイ writer aims at depth rather than volume. You feed it relevant details and it holds one argument across the whole piece. It is a stronger fit for essays than for ten product pages a day.
2. Outlines and Content Ideas
ライトソニック: Content gap analysis shows what rivals rank for and you don’t. That feeds a content strategy rather than one-off posts. Chatsonic can also spin up content ideas from current trends.
共同執筆者: The outline builder is the strongest part of the tool. It returns H1, H2, and H3 structures that read like a finished plan. For blog writing, that is an excellent starting point.
3. AI Detection and Humanizing
ライトソニック: The Humanizer rewrites stiff passages into looser prose. G2 reviews still note that raw output can feel robotic. Human editing remains part of the job.
共同執筆者: Detection proof mode targets classifier scores directly. Independent write-ups still flag its drafts as ai generated. Treat it as a first pass, not a shield.
⚠️ 警告： Neither tool guarantees clean detection scores. Both also need a plagiarism check before you publish or submit.
4. Research and Citations
ライトソニック: Chatsonic handles market research and competitor checks through chat. It reaches the web for fresh context. Citations are not formatted for academic use.
共同執筆者: The research paper generator writes to an academic shape. Sections, argument, and references follow standard structure. This is the clearest gap between the two products.
5. Keyword Data vs Reference Data
ライトソニック: Volume Explorer shows search volume and traffic potential per term. The seo checker then grades your draft and suggests fixes. A SurferSEO link adds SERP data during writing.
共同執筆者: There is no keyword research here at all. Instead you get an IEEE citation generator for technical and academic papers. Different data, different reader.
6. Editing and Fixing Drafts
ライトソニック: その 監査 and issue fixer scans published website content for problems. It flags thin pages and broken structure. Fixes can run in batches for advanced users.
共同執筆者: Editing happens at sentence level instead. Custom styles and tones keep grammar, spelling, and rhythm consistent. It reads your document, not your site.
7. Automation and Agents
ライトソニック: AI visibility tracking shows how models cite your brand. Top tiers give near unlimited access to those reports. It is aimed at teams running a long content strategy.
共同執筆者: オートメーション stops at idea generation. Prompts help you create angles when focus drops. There is no tracking layer behind it.
8. Extra Content Formats
ライトソニック: The SEO agent chains research, drafting, and internal links together. Templates also generate landing pages, ads, and email copy. This is where bulk content generation actually pays off.
共同執筆者: The script generator covers video and podcast work. Beyond that, the format list is short. No image or voice tools ship with it.
9. 価格設定とコスト
Here are both plan menus side by side.
| ティア | ライトソニック | 共著者 |
|---|---|---|
| 無料 | 無料プランあり | ❌ |
| エントリ | Lite: $39 | Pro: $11.99/month |
| 中 | Standard: $79 | Premium: $23.99/month |
| 高い | Professor: $199 | ❌ |
| トップ | Advanced: $399 | ❌ |
| カスタム | 企業向け：カスタム価格設定 | ❌ |
ライトソニック: Five tiers give you room to grow, but the ladder is steep. You pay $39 before you touch all the features. The value case rests on replacing a separate キーワードツール.
共同執筆者: Pro at $11.99/month is the cheapest way into either product. Premium doubles that to $23.99/month and lifts the daily cap. Both tiers undercut the entry price on the other side.
💡 プロのヒント: Writesonic’s free plan is a low-risk way to judge content quality first. CoWriter has no free tier, so budget one paid month to test it.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| 最低価格 | 共著者 | $27 less per month |
| Keyword research built in | ライトソニック | Volume Explorer and seo checker |
| 学術論文 | 共著者 | Citation generator and paper structure |
| Ads and product copy | ライトソニック | Template library covers both |
| To test before paying | ライトソニック | 無料プランがあるのは1つだけ |
| A simple, focused editor | 共著者 | Fewer menus to learn |
💰 あなたの予算
CoWriter Pro costs $11.99/month against $39 for Writesonic Lite. That gap runs past $300 across a year.
🔌 あなたの技術スタック
Writesonic plugs into WordPress, Zapier, Slack, HubSpot, and Google Docs. CoWriter expects you to copy your draft out by hand.
📝 あなたの文章スタイル
Writesonic trains on your brand voice for repeatable marketing copy. CoWriter tunes tone per document, which suits essays and reports.
🎓 あなたの経験レベル
Both have a user friendly interface, but Writesonic hides more depth in submenus. New users often find CoWriter faster on day one.
🆓 無料トライアルとデモ
Only Writesonic offers a standing free tier for creating content. Run the same brief through both before you commit.
🛟 サポートオプション
G2 reviews raise slow replies and billing friction on the Writesonic side. CoWriter Premium buyers hear back faster than Pro buyers.
切り替えガイド
Already paying for one of these? Here is what changes if you move.
🔄 Switching from Writesonic to CoWriter?
✅ 得られるもの：
- A citation generator for academic work
- Roughly half the monthly cost
- A shorter menu and less setup
❌ 失うもの：
- Keyword research and content gap analysis
- Photosonic images and Audiosonic voice output
- ワンクリックでWordPressを公開
📋切り替え方法：
- Export drafts and brand voice notes from Writesonic
- Open a CoWriter Pro account
- Rebuild your tone settings, then cancel the old plan
🔄 Switching from CoWriter to Writesonic?
✅ 得られるもの：
- Search data beside the editor for seo content
- Templates for ads, emails, and landing pages
- A free plan to park on between projects
❌ 失うもの：
- IEEE citation formatting
- The academic paper structure
- The lower $11.99/month entry price
📋切り替え方法：
- Copy your outlines and drafts out of CoWriter
- Start on the Writesonic free plan first
- Train the brand voice, then upgrade to Lite
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 solo writers and small teams. We did not test the Writesonic Enterprise tier, custom data retention setups, or bulk API work. Long-run accuracy over hundreds of pieces sits outside our window too. If you manage a large editorial desk, a more detailed review of team controls would be worth your time.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | 共著者 |
| 🚀 Article Writing | ライトソニック |
| 🎓 Academic Work | 共著者 |
| 🔍 Search Tools | ライトソニック |
| 👶 使いやすさ | 共著者 |
| 🔌 連携機能 | ライトソニック |
| 🎯 Value at Entry Price | 共著者 |
| 🏆総合優勝 | 共著者 |
🏆 WINNER: COWRITER
CoWriter wins 4 out of 7 categories and holds the higher 3.8 rating.
最適な用途: Academic writing, essays and reports, solo writers on a budget
These two products are not really chasing the same buyer. CoWriter is a drafting tool for people who write long, argued pieces.
Writesonic is a marketing platform with writing inside it. If your week is ad copy, product descriptions, and social media posts, the extra $27 pays for itself.
Writesonic is a great tool for search-led teams, and its keyword data is a valuable resource that CoWriter simply does not match. Its Trustpilot score sits at 4.8 across more than 4,000 positive reviews.
But for one writer producing high quality content on a budget, CoWriter wins on price and focus. Either way, plan on editing. Neither tool’s ability to draft removes the need for a human pass.
More of Writesonic Compared
Most Writesonic features also show up elsewhere. Here is how Writesonic AI holds up against other ai writing tools:
Writesonic vs ジャスパーAI
Writesonicが勝利した点： lower entry cost, a gentler learning curve for beginners, and search data bundled into the same seat
Jasper AIが勝利した点： campaign-level brand controls, deeper team permissions, and a larger partner network for agencies
Writesonicが勝利した点： broader format coverage beyond articles, image and voice generation, and one-click WordPress publishing
フレーズ 勝利したタイトル： tighter SERP briefs, cheaper solo plans, and a cleaner research-to-outline flow
Writesonicが勝利した点： full article generation, keyword tooling, and marketing templates クイルボット never attempts
QuillBotが勝利した点： a far cheaper paraphraser, a usable free tier, and sharper sentence-level rewriting
Writesonic vs スケールナッツ
Writesonicが勝利した点： chat tools for research, wider language support, and a richer template shelf
Scalenutが勝利した点： cluster planning, simpler credit maths, and a more predictable monthly bill
More of CoWriter Compared
CoWriter sits in a crowded field of academic AIツール. Here is how it measures up against other ai writers:
CoWriter wins on: IEEE citation formatting, script and outline breadth, and a simpler editor for first drafts
ジェニー 勝利したタイトル： autocomplete that cites as you type, a free daily word allowance, and PDF source uploads
CoWriter wins on: full draft generation, idea prompts, and lower cost at the entry tier
ペーパーパル 勝利したタイトル： journal-grade language editing, a Word add-in, and submission readiness checks
CoWriter wins on: generating whole sections, academic paper structure, and reference building
Grammarlyが優れている点： everywhere-you-type coverage, stronger correction accuracy, and a genuinely useful free plan
CoWriter wins on: drafting speed, tone control, and a lighter interface for writing rather than reading
サイスペース 勝利したタイトル： paper discovery, plain-language explanations of dense studies, and literature mapping
よくある質問
Writesonicは完全に無料ですか？
No. A free plan exists with a monthly word cap and one seat. Paid tiers start at $39 and unlock the search features.
Writesonic の料金はいくらですか?
Five tiers: Lite $39, Standard $79, Professor $199, Advanced $399, and Enterprise at custom pricing. Our writesonic review covers what each unlocks.
Cowriter AIは無料ですか？
No. Both tiers are paid. Pro is $11.99/month and Premium is $23.99/month. A limited trial lets you judge quality content before paying.
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 as products. CoWriter at cowriter.ai handles article writing. Co:Writer Universal is a separate classroom accessibility app, as mentioned earlier.
Writesonicよりも優れたものは何ですか？
It depends on the job. For academic content generation, CoWriter fits better. Jasper AI is the usual pick for the best writesonic alternative in agency work.
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