AI Comparison Engine
Compare AI tools side by side
Pick up to four tools and see price, capability, ratings and the best use case for each.
Ratings profile
Monthly cost comparison
Head-to-head
| Metric | GRGrammarly | QBQuillBot |
|---|---|---|
| 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 |
| Learning curve | Very gentle | Gentle |
| API | Available | None |
| Platforms | Web, Chrome, Desktop, iOS, Android | Web, Chrome, iOS, Android, Word |
| Strengths | Works across browser, desktop and mobile | Cheapest serious writing helper |
| Weaknesses | Suggestions can flatten your voice | Not a full drafting tool |
| Best use case | Email polish | Study notes |
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 is for
The jobs each tool is genuinely good at, side by side.
Grammarly
Free · Pro $12/mo · Business $15/user/mo · Beginner
- Email polish
- Reports
- Student essays
Watch out: Suggestions can flatten your voice
QuillBot
Free · Premium $9.95/mo (annual) · Beginner
- Study notes
- Essay editing
- Citations
Watch out: Not a full drafting tool
Total monthly
$21.95
Best value
QuillBot
Easiest to start
Grammarly
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