Grammarly vs QuillBot——どっちが優秀？
Grammarlyを選ぶべき人: メール・ドキュメント・投稿を書く全ての人向け — どこでもミスをキャッチする常時オンのセーフティネット
QuillBotを選ぶべき人: パラフレーズ、文法チェック、剽窃検出を1つのツールで済ませたい学生や研究者
私たちの見解: Grammarly for simplicity, QuillBot for power users.
| Grammarly | QuillBot | |
|---|---|---|
| 料金 | Free with basic grammar and spelling checks | Pro $12/mo | Free paraphrasing (125 words) | Premium $4.17/mo (annual) |
| 機能 | Real-time grammar, spelling, and punctuation corrections, Tone detection and rewrite suggestions, AI text generation and reply drafting, Works everywhere via browser extension and desktop app, Plagiarism checker on paid plans | Paraphrasing in 9 modes, Grammar checker, Plagiarism detector, Summarizer tool, Citation generator |
| こんな人に最適 | Anyone who writes emails, docs, or posts and wants an always-on safety net that catches mistakes everywhere | Students and academics who need quick paraphrasing, grammar checking, and plagiarism detection in one tool |
| 学習コスト | 簡単 | 簡単 |
本当の違い
Both offer free tiers, so the real question is what you get when you start paying.
Grammarly stands out with Real-time grammar, spelling, and punctuation corrections and Tone detection and rewrite suggestions. QuillBot counters with Paraphrasing in 9 modes and Summarizer tool.
Grammarly's Achilles heel: suggestions can be overly conservative and strip personality from your writing if you accept everything blindly. QuillBot's: paraphrasing can produce awkward phrasing — and the free tier’s 125-word limit is almost unusable. Pick whichever weakness you can live with.
結論
If you value real-time grammar, spelling, and punctuation corrections and メール・ドキュメント・投稿を書く全ての人向け — どこでもミスをキャッチする常時オンのセーフティネット, go with Grammarly. If パラフレーズ、文法チェック、剽窃検出を1つのツールで済ませたい学生や研究者 matters more, QuillBot is your pick. Neither is a bad choice — but one will fit your workflow better.