At a glance
| Grammarly | QuillBot | |
|---|---|---|
| Pricing | Freemium | Freemium |
| Free plan | Yes | Yes |
| Starting price | $30/month | $8.33/month billed annually |
| Category | Writing | Writing |
| Best for | Proofreading emails, reports, and documents | Students rewording and proofreading essays and research papers |
Prices come from each official site and can change. Check the official pricing pages before subscribing.
Key features
Grammarly
- Spelling and grammar corrections as you write
- Tone detection, plus tone adjustment on Pro
- Full-sentence rewrites with one click (Pro)
- Plagiarism and AI-generated text detection (Pro)
- AI text generation: 100 prompts/month free, 2,000 on Pro
- Style guides, brand tones, and snippets for teams
QuillBot
- Paraphraser with 9 built-in modes plus unlimited custom modes (Premium)
- Grammar checker covering 6 languages with tone insights
- Plagiarism checker with 25,000 words per month on Premium
- AI detector and AI humanizer for rewriting machine-sounding text
- Summarizer handling up to 6,000 words on Premium
- Translator for 40+ languages and a citation generator
- Chrome, Edge, Word, macOS, iOS and Android apps
Pros
Grammarly
- Free plan covers core spelling and grammar checks
- Pro adds plagiarism and AI-text detection in the same tool
- Annual billing cuts Pro to $12/month
- Pro free trial available
QuillBot
- Free plan covers basic paraphrasing, grammar fixes and summaries
- Many writing tools (paraphrase, grammar, plagiarism, citations) under one subscription
- Works inside Word, browsers and mobile keyboards
- Annual billing cuts the Premium price substantially versus monthly
Cons
Grammarly
- Monthly billing for Pro is much higher ($30/month vs. $12/month annually)
- Free plan does not include sentence rewrites or tone adjustment
- Suggestions can miss context and sometimes change the intended meaning
- Writing help is focused on English
QuillBot
- Free paraphrasing and humanizing are capped at 125 words per input
- Plagiarism checker is not included on the free plan and is capped on Premium
- Paraphrased output still needs review for meaning and accuracy
Which one should you choose?
Choose Grammarly if you need
- Proofreading emails, reports, and documents
- Improving clarity and tone in professional writing
- Checking academic papers for plagiarism and citation consistency
- Helping non-native speakers write fluent English
Choose QuillBot if you need
- Students rewording and proofreading essays and research papers
- Checking assignments for missed citations before submission
- Content writers rephrasing drafts for clarity or a different tone
- Non-native English speakers polishing emails and documents
Grammarly vs QuillBot: FAQ
Is Grammarly better than QuillBot?
Neither is better for everyone. Grammarly: Grammarly is an AI-powered writing assistant that provides real-time grammar, tone, and clarity suggestions across various apps and websites. QuillBot: No description available. Pick Grammarly for proofreading emails, reports, and documents, and QuillBot for students rewording and proofreading essays and research papers.
Which is cheaper, Grammarly or QuillBot?
QuillBot's paid plans start at $8.33/month billed annually, compared with $30/month for Grammarly, based on each official pricing page at the last update. Limits differ between plans, so compare what each tier includes.
Do Grammarly and QuillBot have free plans?
Yes, both offer free access with usage limits. Paid plans raise those limits and add features.