QuillBot vs Grammarly
Choosing QuillBot or Grammarly? Compare writing quality, plagiarism risk and value in 2026. QuillBot is best for aI paraphrasing, summarizing, and grammar.
QuillBot Best for: AI paraphrasing, summarizing, and grammar checking for students and writers | Grammarly Best for: AI writing assistant for grammar, style, tone, and clarity improvements | |
| Overview | QuillBot has grown from a paraphrasing and summarizing tool into a full AI writing suite, adding an AI Chat, an AI Presentation Maker, a PDF toolkit, an AI Image Detector, a macOS app and a rebranded interface in 2026. | Grammarly is an AI writing assistant for grammar, clarity, tone and rewriting that works across the web and desktop apps. Since late 2025 it is part of the Superhuman suite, with prompt-based AI generation and the proactive Superhuman Go agent alongside the classic checker. |
| Pricing | Freemium | Freemium |
| Users | 50M+ | 40M+ |
| Advantages | โ
Paraphraser and summarizer are fast and genuinely useful, now with Academic and Custom modes โ
One account covers grammar, translation, citations, detectors, chat, presentations and PDF tools โ
Generous free tier lets you try most features before paying โ
New macOS desktop app and PDF suite reduce the need for extra software โ
Clear, flat Premium pricing with monthly, quarterly and yearly options | โ
Works almost everywhere: browser, desktop, Office and mobile keyboards โ
Strong real-time grammar, punctuation and tone feedback โ
AI rewriting and generation now built in via prompts, not just corrections โ
Generous free tier that covers core proofreading and 100 AI prompts a month โ
Superhuman Go agent can act across 100+ connected apps |
| Disadvantages | โFree paraphraser is capped at 125 words, which is limiting for real work โAI and plagiarism detectors are unreliable and should not be treated as definitive โRapid expansion into many tools can make the product feel unfocused โTeam pricing is quote-only with no public figure โNo formal versioning makes it hard to track exactly what changed and when | โPrimarily English only, with limited support for other languages โMonthly AI prompt limits can run out fast for heavy writers โFull AI generation and advanced features are gated behind Pro โSuggestions can be over-eager or context-blind and need review โThe old standalone Business tier is gone, so team buyers must use Pro or Enterprise |
| Rating | โฆ | โฆ |
| Website | quillbot.com | grammarly.com |
Verdict: Which Should You Choose?
Choose QuillBot ifโฆ
- โ You need to paraphrase, rewrite, or rephrase text in different tones and styles
- โ You're a student or writer who needs to express ideas in new ways without plagiarism
- โ You want AI summarization โ condense long articles or documents into key points
- โ You want a translator and grammar checker bundled with paraphrasing at a lower price
Choose Grammarly ifโฆ
- โ You want real-time grammar, spelling, and punctuation corrections as you type anywhere
- โ You need a browser extension that works across Gmail, Google Docs, Slack, and every web form
- โ You want AI-powered tone suggestions, clarity improvements, and full sentence rewrites
- โ You need plagiarism detection for academic or professional writing