2026年版 Small Businessに最適なAI Writing
ChatGPT — ChatGPTは$20/monthでブログ記事から顧客メール、SNSキャプションまで、中小企業の最も幅広いライティングタスクに対応。
料金: Free / $20/mo (Plus)
ChatGPT
Free / $20/mo (Plus)One subscription handles writing, brainstorming, and customer service drafts
おすすめの理由
Most versatile tool for small businesses that need blog posts, product descriptions, emails, and social media
注意点
No built-in brand voice memory on the free plan
Jasper
$49/mo (Creator)Marketing AI that remembers your brand voice and products
おすすめの理由
Train it once on your brand and it produces on-brand content across every channel
注意点
At $49/month it costs more than ChatGPT and Claude combined
Claude
Free / $20/mo (Pro)Clear, helpful writing that does not sound like a robot
おすすめの理由
Best at writing customer communications, policies, and content that needs a warm professional tone
注意点
No image generation or browsing means you need other tools alongside it
Grammarly
Free / $12/mo (Premium)Make every email and document your team writes sound professional
おすすめの理由
Works in Gmail, Google Docs, and everywhere else so quality improves without changing workflows
注意点
Not a content generator, only improves what you have already written
Copy.ai
Free / $49/mo (Pro)Quick marketing copy without needing to learn prompt engineering
おすすめの理由
Pre-built templates for ads, product descriptions, and social posts mean faster output
注意点
Templates can produce generic-sounding copy that blends in with competitors
評価基準
- ✓会話形式のインターフェースでオーナーがプロンプトエンジニアリングを学ばなくても使える
- ✓フォーマルな提案書からカジュアルなInstagramキャプションまで一つのツールで対応
- ✓無料枠で$20/monthのPlusプランにコミットする前に価値を実証できる