Grammarly vs QuillBot
Cheapest paid tier each vendor publishes. Free plans are listed above; tiers priced on request are not plotted because there is no figure to plot.
Where they differ
Only on Grammarly
- Writing assistant
- Tone detection
- Also on macOS, Windows, iOS, Android and API
Only on QuillBot
- Lower entry price: $8.33/mo against $30/mo
- Summarization
- Translation
- Citations
From the pricing tiers and capability tags we track. A capability missing on one side means we have not recorded it there, not that the tool cannot do it.
At a glance
Grammarly and QuillBot both appear in this directory's writing listings. Prices below were read from the vendors' own pages, most recently on October 12, 2026. Paid plans start at $30/mo on Grammarly and $8.33/mo on QuillBot. We track writing assistant on Grammarly and summarization on QuillBot; both cover grammar checker and spell checker. No score and no winner: the facts do the picking.
Capability tags are factual labels we assign when a tool is added; they describe what a tool does, not how well it does it.
Checked against the vendors. Written from each vendor's own site and last re-checked there: Grammarly on October 12, 2026 · QuillBot on October 5, 2026. Vendors change pricing and features without notice, so confirm anything that decides your purchase on the vendor's page.
Grammarly
Grammar, style, and generative writing help across your apps
Grammarly checks grammar, spelling, punctuation, and tone, and can rewrite or generate text on demand. It works as a browser extension, desktop app, keyboard, and inside Microsoft Word and Google Docs.
QuillBot
AI-powered writing platform for paraphrasing, grammar checking, and content creation
QuillBot provides an AI-powered writing platform featuring a paraphrasing tool, grammar checker, summarizer, and AI detector used by over 35 million writers worldwide.
Also in writing
A tool we have an affiliate relationship with. It is not part of the comparison above and we are not calling it the better pick.
- Automating SEO workflows and optimization
- Generating long-form articles and marketing content
- Creating AI-generated images of people, products, and places
Key features
Grammarly
- Grammar, spelling, and punctuation checks
- Tone and clarity suggestions
- Generative rewriting and drafting prompts
- Works in the browser, desktop, Word, Google Docs, and mobile
- Team style guides on Business plans
QuillBot
- State-of-the-art paraphrasing tool with multiple modes
- Grammar and spell checker for error-free text
- AI content detector to identify machine-generated text
- Plagiarism checker scanning against online content databases
- Citation generator supporting APA, MLA, and Chicago styles
What each one does well
Grammarly
- ✓ Catching typos and awkward phrasing across every app you write in
- ✓ Adjusting the tone of an email or message before you send it
- ✓ Team style consistency across many writers
QuillBot
- ✓ Paraphrasing and rewriting text
- ✓ Checking essays and articles for plagiarism
- ✓ Generating academic citations
People also ask
Which is cheaper, Grammarly or QuillBot?
QuillBot is cheaper: paid plans start at $30/mo for Grammarly and $8.33/mo for QuillBot.
Does Grammarly or QuillBot have a free plan?
Both Grammarly and QuillBot publish a free plan.
What is the difference between Grammarly and QuillBot?
Grammarly and QuillBot are both tracked for grammar-checker, spell-checker, generative-writing. Of the capabilities they do not share, only Grammarly is tracked for writing-assistant, tone-detection, and only QuillBot is tracked for summarization, translation, citations.
How much do Grammarly and QuillBot cost?
Grammarly: free plan, then $30/mo. QuillBot: free plan, then $8.33/mo.
Answers are generated from the tracked plans and capability tags shown above, so they move when the vendors' pages do.
Full fact sheets, FAQs, and discussion links: Grammarly · QuillBot · all writing tools