Freemiumwriting

QuillBot

Paraphrasing, grammar, humanizing, summaries, citations and AI detection

AI writing suite for paraphrasing, grammar, humanizing, summarizing, translation, citations, AI detection and plagiarism safeguards.

4.2

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About QuillBot

QuillBot is an AI-powered writing enhancement suite best known for its paraphrasing tool — used by over 35 million people to rewrite sentences, improve clarity, change tone, and avoid repetitive phrasing. Beyond paraphrasing, QuillBot has expanded into a full writing toolkit: a grammar checker, plagiarism detector, citation generator, summarizer, translator (45+ languages), and co-writer with AI suggestions. Students use it for essay refinement, professionals for email polish, and researchers for summarizing academic papers. QuillBot's paraphraser offers seven modes — Standard, Fluency, Formal, Academic, Simple, Creative, and Expand/Shorten — giving users fine-grained control over how the rewrite changes the original text. In 2026, QuillBot added Flow, an AI co-writing mode where the AI suggests the next sentence or paragraph as you type. Its Chrome and Word extensions make it available wherever you write without switching tabs.

✅ Pros

+Best-in-class paraphraser with 7 modes covering formal, academic, creative, and simple rewrites
+Grammar checker catches subtle errors that Grammarly sometimes misses
+Summarizer condenses long articles and papers into key points
+Citation generator (APA, MLA, Chicago) from URLs, DOIs, and manual input
+Chrome and Microsoft Word extensions work in any text field
+Plagiarism checker powered by Copyleaks detects AI-written and copied content
+Translator supports 45+ languages with AI-quality output
+Affordable — most features available on free tier

❌ Cons

−Paraphrasing can occasionally change meaning subtly — always review output
−Not a replacement for human editing on high-stakes professional writing
−Premium required for unlimited paraphrasing, full grammar, and plagiarism checks
−Less strong than Grammarly for real-time inline suggestions in long documents
−AI co-writer less capable than Claude or ChatGPT for generating original content

Key Features

7-Mode Paraphraser

QuillBot's paraphraser offers Standard (balanced), Fluency (natural flow), Formal (professional tone), Academic (scholarly register), Simple (plain language), Creative (inventive rewrites), and Expand/Shorten (change length). Each mode uses different AI parameters to transform text while preserving core meaning — select the mode based on your audience and context.

Grammar Checker & Style Suggestions

Beyond basic spell-check, QuillBot's grammar checker identifies subject-verb disagreement, run-on sentences, comma splices, passive voice overuse, and style inconsistencies. It provides one-click fixes with brief explanations — making it a useful learning tool for writers who want to understand why a change improves their sentence.

Summarizer for Long Documents

Paste in an article, research paper, or document and QuillBot produces a condensed summary in paragraph or bullet-point format. Useful for quickly extracting key information from long PDFs without reading the full text. The summarizer preserves the most important factual claims while reducing length by 50-80%.

Pricing Plans

Free$0/month

✓Paraphraser (125 words limit)
✓Grammar checker (limited)
✓Summarizer
✓Translator
✓Citation generator

Premium$9.95/month

✓Unlimited paraphrasing
✓All 7 paraphrase modes
✓Unlimited grammar checker
✓Plagiarism checker (20 pages/month)
✓Faster processing
✓Compare modes

Prices, plan limits, and promotions may change. Verify final pricing on the official site.

🏆 Our Verdict

QuillBot is the best dedicated paraphrasing and writing enhancement tool available — particularly for students and ESL writers who need to refine existing text rather than generate new content. The free tier is remarkably generous, covering most use cases for casual users. At $9.95/month, Premium is among the most affordable AI writing tools and combines paraphrasing, grammar checking, plagiarism detection, and citation generation in one subscription. For original content generation, Claude or ChatGPT are more powerful. But for making existing text clearer, more formal, or better-cited, QuillBot remains the go-to tool.

✅ Best For

Students rewriting and refining essaysESL writers improving their English fluency and naturalnessAcademics paraphrasing cited sources for literature reviewsContent writers avoiding repetitive phrasingAnyone needing quick citation generationProfessionals wanting to tone-adjust emails before sending

⚠️ Not Recommended For

Users needing unrestricted free rewritingHigh-stakes text without human reviewTeams requiring a fixed global priceBuyers seeking a full long-form research agent

💬 Frequently Asked Questions

Is QuillBot free?

Yes. Free tier covers paraphrasing with two modes. Premium ($9.95/mo) unlocks all modes and longer text.

Who is QuillBot best for?

Students and researchers who need to rephrase text, summarize sources, or check for plagiarism.

How does QuillBot compare to Grammarly?

QuillBot excels at paraphrasing and summarization. Grammarly focuses on grammar correction and tone.

Quick Info

Pricing: freemium
Category: writing
Rating: 4.2 / 5.0
Last Reviewed: 2026-08-24T00:00:00+00:00

💰 Pricing Breakdown

Official US upgrade page verified 2026-08-24: Free $0; Premium $17.95 monthly; $33.96 quarterly ($11.32/month equivalent); $74.96 annually ($6.25/month equivalent). QuillBot says prices adjust by region, currency and subscription selection.

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