The best free Grammarly alternative for checking as you type, with the strongest paraphraser here; its grammar checks are lighter than Grammarly's.
What it is
QuillBot started as a paraphrasing tool and now bundles a grammar checker, summarizer, translator, citation generator, AI detector, AI humanizer and a plagiarism checker. Its browser extensions for Chrome, Edge and Safari, a Word add-in and Windows, macOS, iOS and Android apps check grammar for free in English, German, French, Spanish, Dutch and Portuguese. Free: paraphrasing up to 125 words at a time in 2 modes, basic grammar fixes and 1,200-word summaries. Premium is $99.95 a year ($8.33 a month), $39.95 a quarter or $19.95 month to month, adding all paraphrasing modes, advanced grammar and tone suggestions, 6,000-word summaries and plagiarism checks on 25,000 words a month. Team seats are $69.95 to $89.95 a year. Owned by Learneo, which also owns LanguageTool. Checked November 12, 2026.
Best for
- Students
- Paraphrasing and summarizing
- Free grammar checks in the browser
What we like
- Free browser extension with grammar checking
- Best-in-class paraphraser with 9 modes
- Premium cheaper than Grammarly Pro
What to watch
- Grammar and style feedback is lighter than Grammarly's or LanguageTool's
- Free paraphrasing limited to 125 words at a time
- Paraphrasing and humanizing can cross academic integrity rules if used to disguise sources or AI text
- Monthly Premium costs more than double the yearly rate
Where QuillBot ranks
Alternatives and head-to-heads
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