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HEAD-TO-HEAD

Grammarly vs Quillbot — which one should you pick in 2026?

Reviewed by Faisal Saleem · no paid placements, ever.

Grammarly starts at $12/mo — AI writing assistant for grammar, tone, and clarity across apps. Quillbot starts at $4.17/mo — Paraphrasing tool with grammar checker and summarizer. Both are writing tools. We compared pricing, features, agent capability, pros & cons, and which workflows each is best for — full head-to-head below.

IN ONE LINE

Pick Quillbot if budget is the priority. The other tool wins on specific features — see the side-by-side below.

Pick Grammarly if… vs. Pick Quillbotif…

Grammarly logo

Pick Grammarly if…

  • You specifically need Real-time corrections or Generative rewrite, which Quillbot doesn't ship.
  • Your primary use case is Email editing or Document polishing — Quillbot doesn't list this.
Quillbot logo

Pick Quillbot if…

  • You want the cheaper option (starts at $4.17/mo, Grammarly starts at $12/mo).
  • You specifically need 7 rewriting modes or Summarizer, which Grammarly doesn't ship.
  • Your primary use case is Paraphrasing or Summarizing — Grammarly doesn't list this.
FULL HEAD-TO-HEAD

Grammarly vs Quillbot — side-by-side

TOOL
PRICING MODELFreemiumFreemium
STARTING PRICE$12/mo$4.17/mo
CATEGORYWritingWriting
AI AGENT No No
EDITOR'S PICK No No
KEY FEATURES
  • Real-time corrections
  • Generative rewrite
  • Tone detector
  • Browser extension
  • Plagiarism check
  • 7 rewriting modes
  • Summarizer
  • Citation generator
  • AI detector
  • Translator
USE CASES
  • Email editing
  • Document polishing
  • Tone adjustment
  • Plagiarism checks
  • Paraphrasing
  • Summarizing
  • Citation generation
  • Grammar checking
TAGS
#grammar#writing#editor
#paraphrase#grammar#summarize
WEBSITEwww.grammarly.comquillbot.com
PRICING

Grammarly vs Quillbot pricing

Quillbot is the cheaper option at the entry tier — roughly $7.83/mo less than the other.

Grammarly logo

Grammarly

Freemium · entry tier from $12/mo

3 plans available — see breakdown below.

Quillbot logo

Quillbot

Freemium · entry tier from $4.17/mo

3 plans available — see breakdown below.

Grammarly logoGrammarly plans

Free

For everyday writing

$0forever
100 AI prompts
  • Spelling and grammar fixes
  • See writing tone
  • 100 AI prompts
POPULAR

Pro

Most popular for individuals

$12per month
2,000 AI prompts / month
  • Rewrite full sentences
  • Adjust writing tone
  • Plagiarism & AI detection
  • 2,000 AI prompts/month

Enterprise

For larger organizations

Custom
Unlimited prompts
  • Proactive AI
  • BYOK encryption
  • SAML SSO, SCIM, audit logs
  • Unlimited prompts

Quillbot logoQuillbot plans

Free

Get started with QuillBot

$0forever
Paraphrase 125 words at a time
  • Paraphrase up to 125 words
  • Fix basic grammar errors
  • 2 paraphrase modes
  • Limited AI Detector access
POPULAR

Premium

Full QuillBot power

$4.17billed annually
Unlimited paraphrasing
  • Unlimited paraphrasing
  • 9 paraphrase modes + custom
  • Advanced grammar checks
  • Plagiarism (25k words/month)
  • 23 languages

Team

For teams and orgs

Custom
Unlimited per seat
  • All Premium features
  • Team usage metrics
  • Centralized billing
  • Priority support
USE CASES

What each is best for

Each use case listed by either vendor, with which tool actually covers it.

  • Email editing
  • Document polishing
  • Tone adjustment
  • Plagiarism checks
  • Paraphrasing
  • Summarizing
  • Citation generation
  • Grammar checking
PROS & CONS

Strengths and trade-offs

Grammarly logo

Grammarly

Pros of Grammarly

  • Free tier available; paid plans from $12/mo
  • Real-time corrections
  • Generative rewrite
  • Tone detector

Cons of Grammarly

  • No autonomous agent — handles single prompts, not multi-step workflows
  • Competition is strong in this space — see Quillbot for comparison
Quillbot logo

Quillbot

Pros of Quillbot

  • Free tier available; paid plans from $4.17/mo
  • 7 rewriting modes
  • Summarizer
  • Citation generator

Cons of Quillbot

  • No autonomous agent — handles single prompts, not multi-step workflows
  • Competition is strong in this space — see Grammarly for comparison
QUESTIONS & ANSWERS

Grammarly vs Quillbot — frequently asked questions

Is Grammarly better than Quillbot?
It depends on your workflow. Grammarly is focused on assistive features, while Quillbot doesn't include an agent. Neither is currently our Editor's Pick — both are credible options. See the side-by-side table above for specifics.
Is Grammarly cheaper than Quillbot?
Quillbot is cheaper. Grammarly starts at $12/mo and Quillbot starts at $4.17/mo — a difference of roughly $7.83 per month at the entry tier.
Does Grammarly have an AI agent?
No — Grammarly is built around assistive features (autocomplete, chat) rather than a true autonomous agent. If agent functionality is a hard requirement, neither tool in this comparison ships one.
Does Quillbot have an AI agent?
No — Quillbot focuses on assistive features rather than agents.
What's the difference between Grammarly and Quillbot?
Both are writing tools. The key differences come down to pricing (Grammarly: Freemium, from $12/mo; Quillbot: Freemium, from $4.17/mo), agent capability (Grammarly: no, Quillbot: no), and feature focus. Use the comparison table above to weigh which axis matters most for your work.
What's a good alternative to Grammarly and Quillbot?
Beyond Grammarly and Quillbot, the strongest alternatives in Writing depend on whether you prioritise price, agent capability, or specific features. See our "Grammarly alternatives" and "Quillbot alternatives" pages for a hand-picked ranking of each.
MORE
Best Grammarly alternatives
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Best Quillbot alternatives