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 is an AI writing platform built around paraphrasing, summarizing, and grammar checking, with added translation, citation, and plagiarism/AI-content detection tools for students and writers. | Grammarly is an AI writing assistant for grammar, clarity, tone and rewriting that works across the web and desktop apps. Since 2025 it is part of the Superhuman suite, with prompt-based AI generation and the proactive Superhuman Go agent alongside the classic checker. |
| Pricing | Paid | Freemium |
| Users | 50M+ | 40M+ |
| Advantages | ✅Paraphraser and summarizer remain fast and useful, now with Academic and Custom modes ✅One account covers grammar checking, translation, citation generation, and content/plagiarism detection ✅Premium subscription offers monthly, semi-annual, and annual billing options ✅Team plan available for organizations needing shared billing | ✅Works almost everywhere: browser, desktop, Office and mobile keyboards ✅Strong real-time grammar, punctuation and tone feedback ✅AI rewriting and generation now built in via prompts, not just corrections ✅Generous free tier that covers core proofreading and 100 AI prompts a month ✅Superhuman Go agent can act across 1 million+ connected apps and websites |
| Disadvantages | ❌Current Premium pricing could not be verified on the vendor's own site ❌Whether a free tier currently exists could not be confirmed ❌AI and plagiarism detectors are not authoritative and should not be treated as definitive proof ❌Team pricing is quote-only with no public figure ❌No formal versioning makes it hard to track exactly what changed and when | ❌Advanced AI language suggestions are limited to six languages, though basic corrections cover 20+ ❌Monthly AI prompt limits can run out fast for heavy writers ❌Full AI generation and advanced features are gated behind Pro ❌Suggestions can be over-eager or context-blind and need review ❌Only three plans exist - Free, Pro and Enterprise - with no separate team tier |
| Rating | … | … |
| Website | quillbot.com | grammarly.com |
Verdict: Which Should You Choose?
Choose QuillBot if…
- ✅ You need a dedicated paraphrasing tool with an Academic Mode for rewording scholarly text.
- ✅ You want to summarize long articles or documents and control length and style with Custom Mode.
- ✅ You want citation generation built into the same account as your paraphrasing and grammar tools.
- ✅ You need a translator bundled alongside grammar checking and plagiarism detection in one platform.
Choose Grammarly if…
- ✅ You write across many apps and want the same grammar and tone suggestions in your browser, desktop, Office, and mobile keyboard.
- ✅ You want full-sentence AI rewrites and tone detection built into your everyday writing flow, not just paraphrasing.
- ✅ You want to start for $0 per month and still get core corrections plus a monthly allotment of AI prompts.
- ✅ You're a team or enterprise that wants an AI agent like Superhuman Go to act across connected apps and websites.