Head-to-head
Grammarly vs QuillBot
Grammarly for everyday writing quality; QuillBot for rewriting and summarising. Updated for 2026 — verified 3 days ago.
Grammarly
Grammarly · Free · Pro $12/mo · Business $15/user/mo
QuillBot
Course Hero · Free · Premium $9.95/mo (annual)
The verdict
Grammarly for everyday writing quality; QuillBot for rewriting and summarising.
Grammarly checks and improves what you write everywhere you write it, free for the basics and $12/month for Pro. QuillBot is a rewriting workbench — paraphrasing, summarising and citation help — and its premium plan is cheaper at about $9.95/month billed annually. Students and researchers reworking existing text lean QuillBot; professionals writing email, documents and reports lean Grammarly.
Who wins each category?
Our verdict on the things people actually choose between, not benchmark numbers.
Grammar and clarity everywhere
Works across browser, desktop and mobile apps.
GrammarlyParaphrasing and rewriting
Purpose-built modes for reworking passages.
QuillBotSummarising long text
Faster at condensing readings and reports.
QuillBotTone and style guidance
Better suggestions for professional tone.
GrammarlyPrice
About $9.95/month annually against $12/month.
QuillBotFree tier
Both free tiers are genuinely usable.
Tie
Choose Grammarly if…
email, documents and professional writing you want to read better.
- Works across browser, desktop and mobile
- Strong free tier
Watch out: Suggestions can flatten your voice.
Choose QuillBot if…
students and researchers rewriting, summarising and citing sources.
- Cheapest serious writing helper
- Generous free tier
Watch out: Not a full drafting tool.
Grammarly vs QuillBot: full comparison table
| Metric | Grammarly | QuillBot |
|---|---|---|
| Entry price | Free · Pro $12/mo · Business $15/user/mo | Free · Premium $9.95/mo (annual) |
| Free version | Yes | Yes |
| Accuracy score | 90% | 83% |
| Ease of use | 4.8/5 | 4.6/5 |
| Value for money | 4.4/5 | 4.6/5 |
| Performance | 4.3/5 | 4/5 |
| Learning curve | Very gentle | Gentle |
| API access | Available | None |
| Mobile app | Yes | Yes |
| Platforms | Web, Chrome, Desktop, iOS, Android | Web, Chrome, iOS, Android, Word |
| Launched | 2009 | 2017 |
Highlighted values win that row. Verified 3 days ago.
Feature matrix
| Feature | Grammarly | QuillBot |
|---|---|---|
| Grammar and clarity | ||
| Tone rewrites | ||
| Generative drafting | ||
| Works in any app | ||
| Paraphraser | ||
| Grammar checker | ||
| Summariser | ||
| Citation generator | ||
| Plagiarism check |
What each one really costs
Grammarly per year
$144
Free tier available
QuillBot per year
$119.39999999999999
Free tier available
Both together
$263.4
Save $119.39999999999999 a year by keeping the other on its free tier.
Grammarly vs QuillBot: frequently asked questions
- Is it acceptable to use these for coursework?
- Grammar and clarity help is normally fine, but paraphrasing tools can cross the line into misconduct. Check your institution's rules on AI-assisted work before using either on assessed writing.
- Do I need both?
- Rarely. Pick QuillBot if most of your work is reworking existing text, Grammarly if most of it is writing something new.
Want to add a third tool to this matchup?
Open in the comparison engine