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Grammarly vs QuillBot
A plain-English comparison to help you choose between them.
Grammarly is the editorial safety net: real-time grammar, clarity and tone across nearly every app, with rewrites and AI drafting layered in, now part of the Superhuman suite. QuillBot is the transformation specialist: paraphrasing modes, summarising and citation help, at a friendlier price for students. Pick Grammarly for continuous, everywhere correction and professional polish; pick QuillBot when reworking existing text is the main job and budget matters.
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Side by side
- Summary
Grammarly is the writing assistant that lives where you type: browser, desktop, mobile, Google Docs and Microsoft Office. It catches errors in real time, rewrites for clarity and tone, and now adds AI drafting plus agents for humanising machine text and detecting it.
Its company is now Superhuman, uniting Grammarly with the Coda workspace and the Mail inbox under one suite, threaded together by a proactive assistant. The Grammarly product itself continues under its own name as the writing layer, on free and paid tiers.
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Its enduring value is the safety net: a constant editorial pass over everything a person or a team writes, everywhere they write it.
- Best for
- Real-time grammar, clarity and tone checking across nearly every app
- One-click rewrites that tighten without changing meaning
- A steady editorial register for teams and non-native writers
- AI drafting where you already type, not in a separate app
- Checking whether text reads as human or machine-made
- Cost
- Freemium (Free tier + paid plans)
- Ease
- Openness
- Hosted service
- Data
- For confidential writing, check enterprise/DPA terms before pasting sensitive content; consumer tiers process text on Grammarly/Superhuman servers. Human-review AI rewrites for accuracy and voice. Note "Superhuman" is now the parent company: verify which product/tier you are buying, as stale listings cite retired "Starter" pricing.
- Summary
QuillBot is the paraphrasing specialist: reworking existing text through modes that adjust tone, formality and length, alongside summarising, grammar checking and citation help. Its centre of gravity is transformation, not generation: text goes in, better-shaped text comes out.
That focus made it a fixture for students and everyday writers: accessible, widely used and shaped around the polishing jobs that dominate real writing work.
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For deep grammar and style coaching the dedicated editor leads, and for original drafting the general assistants do; QuillBot owns the rework.
- Best for
- Paraphrasing with tone, formality and length control
- Summarising long text quickly
- Citation generation for academic work
- Students and everyday writers polishing drafts
- Reworking text rather than generating it
- Cost
- Freemium (Free tier + paid plans)
- Ease
- Openness
- Hosted service
- Data
- Text processes under standard SaaS terms; institutional academic-integrity policies are the real constraint to check.
Pricing
- Grammarly
Free$12/user·Custom
Prices as of August 2026.
- Free
- Free
- Pro
- $12per user, per monthbilled annually; $30 per user per month if billed monthly
- Enterprise
- Price on applicationno list price published
- QuillBot
Free·$8.33$7.50/user
Prices as of August 2026.
- Free
- Free
- Premium
- $8.33per monthbilled annually; $19.95 per month if billed monthly
- Team Plan
- $7.50per user, per monthbilled annually; 2 seats minimum
By area
Where each one pulls ahead, area by area.
| Area | Grammarly | QuillBot |
|---|---|---|
| By job | ||
| Getting started | Grammarly improves the work you were already doing, correcting and clarifying as you type with no prompting to learn and no new destination | QuillBot starts from something you already have rather than a blank chat box, reworking a draft across tone, formality and length with summarising and citation help alongside, and a free tier that covers the habit while you learn the modes |
| By task | ||
| Writing & research | Grammarly gives a non-native writer a constant editorial safety net, and will draft from a prompt so the result can be edited into your own voice rather than left in its | QuillBot actively reworks what already exists, paraphrasing across tone and formality modes, summarising and checking at prices well under the full assistants |
Common questions
Which catches more errors?
Grammarly: deep grammar and style coverage across applications is its core, and its suggestions engine remains the reference for correction. QuillBot's checking is competent but secondary to its paraphrasing identity.
Why do students often prefer QuillBot?
Paraphrasing modes, summarising and citation generation map directly onto student work, at accessible pricing. The caveat is institutional: paraphrasing tools intersect with integrity policies, and the policy always wins.
What is this Superhuman connection with Grammarly?
The company behind Grammarly renamed itself Superhuman, uniting Grammarly with the Coda workspace and the Mail inbox under one suite. The Grammarly product continues under its own name; for a buyer, the suite context mostly signals where the roadmap points.
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Tool facts last checked August 2026