AI Writer
AI Writer is a web service for owned-media teams that organizes article production from planning through review.
What AI Writer is
AI Writer is a web service for owned-media teams that organizes article production from planning through review. Its workflow covers topic selection, keyword choice, title creation, heading structure, and body drafting. An SEO analysis engine handles keyword analysis, competitor research, and headline suggestions, while SERP analysis summarizes information from competitor sites for a target keyword. The editor combines an AI assistant with comments, text replacement, and accessibility checks. SEO review scores an article out of 100 and recommends improvements. A seven-day trial includes every feature, allows up to five articles, and requires no credit card. There is no free plan. The service supports keyword research, content scoring, and AI-assisted drafting on the web. AI Writer was founded in 2021 and is based in Tokyo. Its FAQ says submitted information is not used for machine-learning training, and its guide says customers own copyright in generated text.
Good
- Seven-day trial includes all features
- SEO review scores articles out of 100
- Workflow covers planning through body text
- Accessibility checks included in editor
- No credit card required for trial
Watch out
- No free plan
- Trial limited to five articles
- Paid plans are before tax
- Web platform only
Who it suits
It suits owned-media teams producing articles, including users without specialist knowledge. Web-based access fits teams working in a browser.
Verdict
AI Writer brings drafting, SEO analysis, and editorial checks into one owned-media workflow. The trial lets teams evaluate the full feature set before choosing a paid plan.
Plans and prices
From AI Writer's own pricing page, checked 3 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| 個人プラン | ¥9,000 a month | 1名 · 5記事/月 · 1プロジェクト · AIアシスタント生成文字数無制限 · 年払いで9,000円/月（税別）; 月払い10,000円/月（税別） |
| ライト | ¥36,000 a month | 2名 · 20記事/月 · 1プロジェクト · AIアシスタント生成文字数無制限 · 年払いで36,000円/月（税別）; 月払い40,000円/月（税別） |
| スタンダード | ¥90,000 a month | 5名 · 60記事/月 · 3プロジェクト · AIアシスタント生成文字数無制限 · 年払いで90,000円/月（税別）; 月払い100,000円/月（税別） |
| カスタマイズプラン | Priced on request | 利用人数 · 記事数 · プロジェクト数はカスタマイズ · 要相談 |
The facts
Each one read from AI Writer's own pages, with the date it was checked.
What it does
- Article workflow
- The AI creates articles through steps covering topic, keyword, title, heading structure, and body text.checked 3 Oct 2026
- Copyright
- The maker's service guide says copyright in text created with AI Writer belongs to the customer.checked 3 Oct 2026
- Data use
- The FAQ says submitted information is not used for machine-learning training.checked 3 Oct 2026
- Editor
- The editor includes an AI assistant, comments, text replacement, and accessibility checks.checked 3 Oct 2026
- Intended users
- The maker describes the service as intended for owned-media article production and says it can be used without specialist knowledge.checked 3 Oct 2026
- Purpose
- AI Writer is a service for owned-media teams that streamlines article production.checked 3 Oct 2026
- SEO analysis
- Its SEO analysis engine automates keyword analysis, competitor research, and headline suggestions.checked 3 Oct 2026
- SEO review
- Its SEO review scores an article out of 100 and suggests improvements.checked 3 Oct 2026
- SERP analysis
- The SERP analysis feature summarizes competitor-site information for a target keyword.checked 3 Oct 2026
- Support
- The homepage says it offers manuals, video tutorials, and support; plan details list email and chat support.checked 3 Oct 2026
Money
- Billing
- The FAQ says payment is available by credit card or bank transfer.checked 3 Oct 2026
- Trial
- The seven-day free trial allows up to five articles, includes all features, and does not require a credit card.checked 3 Oct 2026
The company
- Founded
- 2021checked 28 Sep 2026
- Headquarters
- Tokyo, Japanchecked 28 Sep 2026
- Maker
- The maker's service guide identifies the company as 合同会社ゼロイチスタート, established on 2021-08-31, with an office in Chuo-ku, Tokyo.checked 3 Oct 2026
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