Direct comparison
QuillBot vs Grammarly for Academic Writing
Honest comparison: Grammarly wins on grammar and tone; QuillBot wins on paraphrasing, Academic mode, and multilingual support at lower cost.
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How do QuillBot Paraphraser, Grammarly compare side by side?
The table below compares QuillBot Paraphraser, Grammarly across 12 procurement-relevant dimensions, from core function through best for.
Side-by-side comparison
| Dimension | QuillBot Paraphraser | Grammarly |
|---|---|---|
| Core function | Paraphrasing / rewriting text | Grammar, spelling, clarity, and tone checking |
| Free-tier limits | 125 words per paraphrase; 2 of 9 modes; 25,000 words/month plagiarism check | Unlimited core grammar/spelling checks; 100 AI prompts/month |
| Paid pricing (as of Aug 2026) | From $8.33/month, billed annually | $12/month (Pro) |
| Paraphrasing modes | 9 modes (Standard, Fluency, Formal, Simple, Creative, Academic, Expand, Shorten, Humanize) + custom | One 'rewrite sentence' feature, no mode selection |
| Word-similarity control | Yes — adjustable synonym/similarity slider | No |
| Academic-specific mode | Yes — dedicated Academic mode | No dedicated academic mode |
| Grammar/clarity checking depth | Basic grammar checker included | Core product — real-time, continuous checking as you type |
| Tone adjustment | Limited (via mode choice) | Dedicated tone detector and adjustment (Pro) |
| Multilingual support | Paraphrasing in ~23 languages; translation in 40+ | English only |
| Browser/app integration | Browser extension, Word add-in | Browser extension, desktop app, Word/Google Docs, works across 1M+ apps and sites |
| AI-detection / plagiarism check | Plagiarism checker included (Premium) | Plagiarism and AI-detection checks (Pro) |
| Best for | Rephrasing dense drafts, second-language authors, budget-conscious users | Continuous proofreading and tone consistency across long documents |
Common questions
Common questions about QuillBot Paraphraser vs Grammarly
Can I use QuillBot and Grammarly together?
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Yes, and many researchers do — use QuillBot to restructure a dense or awkward passage you've drafted yourself, then run the result through Grammarly for a final grammar, clarity, and tone pass. They are not mutually exclusive; they cover different stages of editing.
Does QuillBot have an academic-specific mode?
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Yes. QuillBot's Premium plan includes an Academic paraphrasing mode, described on QuillBot's own product page as expressing text 'in a technical and scholarly way,' alongside Formal, Simple, Creative, Expand, Shorten, Humanize, and Custom modes.
Is QuillBot cheaper than Grammarly?
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As of August 2026, QuillBot Premium starts at $8.33/month on an annual plan, versus $12/month for Grammarly Pro — verify current pricing on each vendor's site, as both change periodically.
Which has a better free plan?
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Grammarly's free tier is more generous for its core purpose: unlimited basic grammar and spelling checks. QuillBot's free tier caps paraphrasing at 125 words per use and limits you to two of its nine modes.
Will using QuillBot get my paper flagged for plagiarism or AI use?
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Using a paraphraser to rework your own draft is not inherently a plagiarism issue, but many institutions and journals now require disclosure of AI-assisted paraphrasing under generative-AI policies, and AI-detection tools can flag heavily paraphrased text. Check your target journal's and institution's policy before relying on either tool for submitted-manuscript text.
