Head to head · Writing · updated Oct 25, 2026
Grammarly vs QuillBot
Grammarly scores 18 to QuillBot's 11 on public evidence for grammar, tone & editing, and they rank #2 and #4 there. Both are free to start. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
Grammarly
A writing assistant that checks grammar, tone and clarity everywhere you type and rewrites or drafts text on request.
+ Works in nearly every text field on every platform, so corrections and tone suggestions follow you into Gmail, Slack and Word.
− Suggestions can flatten a distinctive voice and the premium nag prompts in the free tier are constant.
QuillBot
A paraphraser, grammar checker, summarizer and AI detector/humanizer popular with students.
+ The paraphraser's mode slider (fluency, formal, simple, creative) is the fastest way to rework a clumsy paragraph.
− Paraphrased text sometimes changes meaning, and its humanizer and detector are unreliable against serious detection tools.
Side by side
public evidence| Grammarly | QuillBot | |
|---|---|---|
| Evidence score / 100 | 18 | 11 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 1 | 0 |
| Release-feed mentions, 30d | 0 | 0 |
| Last activity | – | – |
| Pricing | Free tier · Pro from $12/mo billed annually | Free tier · Premium from $4.17/mo billed annually |
| Platforms | web, mac, windows, ios, android, chrome-extension | web, mac, windows, ios, android, chrome-extension |
| Maker | Grammarly | QuillBot (Learneo) |
Which one?
Pick Grammarly if
- you want the stronger public evidence (18 vs 11)
Best for everyday grammar and tone checking.
Pick QuillBot if
The paraphraser's mode slider (fluency, formal, simple, creative) is the fastest way to rework a clumsy paragraph.
Best for paraphrasing and quick rewrites.