2026 Head-to-head
Grammarly vs QuillBot: which should you pick?
Facts last verified · Category: Writing
Grammarly and QuillBot both polish text, but from opposite directions. Grammarly is a correctness layer that follows you everywhere — 500,000+ apps and sites via extensions and desktop apps — with the most accurate grammar engine in the category, refined over 15+ years. QuillBot is paraphrase-first: nine rewriting modes plus a summarizer, citation generator, and plagiarism checks aimed squarely at students and academics reworking existing text.
Price tilts the comparison more than most realize: QuillBot Premium runs about $8.33/month annually versus Grammarly Pro at $12, and QuillBot's value scores reflect it (4.7 vs 4.0). But QuillBot's free tier hits walls fast, and neither tool drafts long-form content from scratch — that's a different category entirely.
Quick verdict
Choose Grammarly if you write in many apps daily and want the most accurate always-on polish.
Choose QuillBot if you rework, summarize, and cite existing text — especially on a student budget.
Grammarly vs QuillBot at a glance
| Fact | Grammarly | QuillBot |
|---|---|---|
| Our score | ★ 4.5 / 5 | ★ 4.3 / 5 |
| Best for | Best for everyday writing polish | Best for students and academics |
| Standout | Polish everywhere you type | Nine-mode paraphraser with academic toolkit |
| Pricing | Free plan available; Pro from $12/month billed annually | Free plan available; Premium from $8.33/month billed annually |
| Free trial | 7 days on Pro, payment method required | No |
| Platforms | web, windows, macos, ios, android, browser-extension, office-addin | web, windows, macos, ios, android, browser-extension, office-addin |
| Public API | No | No |
| External reviews | 84% positive | 82% positive |
Pricing verified August 2026 · prices as listed by each vendor; check the official sites for current offers.
Editorial scores
Same fixed rubric for every tool in the directory, 0–5. Bold marks the higher score.
| Criterion | Grammarly | QuillBot |
|---|---|---|
| Output quality | 4.4 | 4.2 |
| Ease of use | 4.7 | 4.6 |
| Features | 4.2 | 4.3 |
| Value for money | 4.0 | 4.7 |
Why choose Grammarly
- Works in 500,000+ apps and sites via extensions and system-wide apps, not one editor
- Best-in-class grammar accuracy refined over 15+ years
Where it falls short
- Polishes what you wrote — it won't draft long content from scratch
- Suggestions can over-correct and flatten a distinctive voice
Deal: Annual billing drops Pro to $12/mo, plus a 7-day free trial
Why choose QuillBot
- Nine paraphrasing modes where most rivals offer one or two
- Full academic toolkit — citations, summarizer, plagiarism checks — under $9/mo
Where it falls short
- Paraphrasing-first — not built to generate original long-form content
- Free tier is limited enough that regular users will hit walls fast
Deal: 58% off — Premium at $8.33/mo when billed annually
Our verdict
Grammarly wins for everyday professional writing: better grammar accuracy, far broader app coverage, and tone controls that matter in work contexts. QuillBot wins for academic workflows — paraphrasing, summarizing, and citing on a student budget. Its rewriting depth is something Grammarly doesn't match; Grammarly's ubiquity is something QuillBot can't.