QuillBot is a suite of AI writing tools best known for its paraphraser, which rewrites sentences and paragraphs in different styles such as standard, fluent, formal or simple. It also includes a grammar checker, summarizer, AI humanizer, AI detector, plagiarism checker, citation generator and translator.
It is popular with students, researchers and non-native English writers who need to rephrase sources, shorten long texts and polish their writing quickly.
Key features
- Paraphraser with multiple modes and a synonym slider.
- Grammar checker with advanced recommendations on Premium.
- Summarizer for articles and papers up to 6,000 words on Premium.
- AI Humanizer to make AI-assisted text sound more natural.
- AI Detector with unlimited checks on Premium.
- Plagiarism checker for up to 25,000 words per month on Premium.
- Citation generator and translator for academic work.
QuillBot pricing
| Plan | Price | Highlights | Limits |
|---|---|---|---|
| Free | $0 | Paraphraser (2 modes), basic grammar, basic humanizer, summaries | 125 words per paraphrase, 1,200-word summaries, limited AI detection |
| Premium | $8.33/month billed annually | All paraphrase modes, advanced grammar and humanizer, unlimited AI detection | Unlimited paraphrasing, 6,000-word summaries, 25,000 words of plagiarism checks |
| Team | Contact for quote | Premium for groups with admin dashboard and central billing | Discounted invoice for 5+ users |
Premium is also available on shorter billing periods at a higher monthly rate. Premium comes with a 3-day money-back guarantee.
Our experience using QuillBot
QuillBot’s paraphraser produces natural rewrites and the modes make it easy to change register, from casual to academic. The summarizer is quick and handy for research.
Paraphrasing is not a substitute for proper citation, and rewrites should always be checked for meaning. For full grammar coverage in every app, Grammarly is more seamless.
Who should use QuillBot?
QuillBot is ideal for students, academics, bloggers and non-native English writers on a budget who regularly rephrase, summarize and check text.
QuillBot vs alternatives
Grammarly is stronger for real-time grammar and tone across apps. Writesonic and Jasper generate full articles and marketing copy. ChatGPT and Claude can paraphrase too, but QuillBot is faster for focused rewriting.
See all AI for Writing and AI for Education tools.
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Frequently asked questions
Is QuillBot free?
Yes. The free plan includes the paraphraser with 2 modes and up to 125 words, basic grammar fixes and basic summaries.
How much is QuillBot Premium?
Premium costs $8.33 per month when billed annually. Shorter billing periods cost more per month.
Does QuillBot have an AI detector?
Yes. Free users get limited access and Premium users get unlimited AI detection.
Is QuillBot better than Grammarly?
QuillBot is better and cheaper for paraphrasing and summarizing, while Grammarly is better for real-time grammar and tone in every app.
Can I get a refund on QuillBot?
Premium includes a 3-day money-back guarantee.
