Grammarly vs QuillBot for Paraphrasing: Which Is Better?
QuillBot wins for paraphrasing. It was purpose-built for rewriting text and offers multiple paraphrase modes, sentence-level control, and a free tier that covers most casual use. Grammarly's rewrite tools are capable but secondary features — they sit inside a writing assistant that costs more and focuses on grammar, not rewording.
Choose QuillBot if paraphrasing, summarizing, or rewording existing text is your core task. Choose Grammarly if you want all-in-one writing help — grammar, tone, style, plagiarism — and only need light rewriting on the side.
Feature Score Comparison
| Feature | Grammarly | QuillBot | Edge |
|---|---|---|---|
| Paraphrase modes / styles | 2 (rewrite, shorten) | 8 modes | QuillBot |
| Free paraphrasing | Very limited | 125 words free | QuillBot |
| Grammar & spelling correction | Best in class | Basic | Grammarly |
| Tone & clarity suggestions | Strong | Minimal | Grammarly |
| Plagiarism detection | Premium plan | Premium plan | Tie |
| Summarizer tool | No | Yes | QuillBot |
| Browser / app integrations | Excellent | Limited | Grammarly |
| Value for paraphrasing tasks | Expensive for use case | Strong | QuillBot |
Pricing Comparison
| Plan | Grammarly | QuillBot |
|---|---|---|
| Free tier | Basic grammar checks only | 125-word paraphraser, summarizer |
| Entry paid plan | Premium ~$12/mo (annual) | Premium ~$4.17/mo (annual) |
| Monthly billing | ~$30/mo | ~$9.95/mo |
| Business / team plan | Business ~$15/mo per member | No team plan |
| Paraphrase word limit (paid) | No hard limit (doc-based) | Unlimited (Premium) |
Pricing and features verified as of June 2026. Verify current pricing at grammarly.com/plans and quillbot.com/pricing before purchasing.
Grammarly — What It Actually Does for Paraphrasing
Grammarly is primarily a grammar checker and writing assistant. It added generative AI rewriting features (under the "Grammarly GO" umbrella) that can rephrase sentences, adjust tone, and shorten text. These work well inside documents you're already editing in Grammarly's editor or via its browser extension.
The paraphrasing experience is not a standalone tool — it's triggered by selecting text and choosing from contextual suggestions. You don't paste a paragraph and hit "rephrase"; you work inside Grammarly's editor. For users already in that workflow, it's convenient. For users who just want to reword text quickly, it adds friction.
The "Improve It" and "Rewrite" prompts from Grammarly GO work reasonably well for single sentences or short paragraphs. They maintain grammatical accuracy (expected, given Grammarly's core strength) but don't give you mode options like "Formal," "Fluent," "Creative," or "Expand" the way QuillBot does. You're working from a general instruction, not a targeted mode.
On the plagiarism side, Grammarly Premium includes a plagiarism checker that scans against a large web database. This matters if you're paraphrasing academic or published content and want to verify the output is sufficiently distinct.
✓ Strengths
- Best-in-class grammar correction on rewrites
- Tone and clarity tools included
- Deep browser/app integration (Docs, Outlook, Gmail)
- Plagiarism checker on Premium
- Useful if you already need grammar checking
✗ Weaknesses
- No dedicated paraphrase tool or modes
- Costs 2–3x more than QuillBot for same task
- Free plan barely supports rewriting
- Rewriting requires staying inside Grammarly's editor
- No summarizer feature
QuillBot — What It Actually Does for Paraphrasing
QuillBot was built specifically for paraphrasing. The core product is a paraphrase editor where you paste text, choose a mode, and get a rewritten version with word-level comparison highlighting so you can see exactly what changed. That's the whole interface, and it's well-designed for the job.
The eight paraphrase modes are the key differentiator: Standard, Fluency, Formal, Simple, Creative, Expand, Shorten, and Custom (Premium). Each shifts the output noticeably. "Formal" works for academic rewriting. "Simple" is useful for plain-language adaptation. "Creative" generates more varied alternatives. "Expand" adds context. "Shorten" condenses. For anyone who needs to rewrite text for different audiences or purposes, this control is genuinely useful.
The free tier allows 125 words per paraphrase — enough for a paragraph or two. The paid tier removes limits and unlocks all modes (Custom mode is Premium-only). QuillBot also includes a Summarizer, Grammar Checker, Plagiarism Checker (Premium), Citation Generator, and Translator — all of which sit alongside the paraphraser as complementary tools.
Where QuillBot is weaker: the grammar checker isn't as thorough as Grammarly's, the integrations are limited (a browser extension, Google Docs add-on), and the output quality on creative or nuanced content can feel mechanical — it restructures syntax without always preserving voice.
If you're comparing tools for student use specifically, see our related guide on Grammarly vs QuillBot for students.
✓ Strengths
- 8 dedicated paraphrase modes
- Free tier available (125 words)
- Word-level diff view of changes
- Summarizer included
- Much cheaper than Grammarly
- Plagiarism checker on Premium
✗ Weaknesses
- Grammar checking is basic
- Free word limit (125 words) is tight for longer texts
- Can sound mechanical on nuanced content
- Fewer integrations than Grammarly
- No team/business plan
Use-Case Verdicts
QuillBot's Fluency and Formal modes are designed for exactly this. You paste the original, see highlighted changes, and can manually adjust word-level synonyms using the built-in thesaurus. Grammarly can rewrite text, but it doesn't show you what changed or give you control over the degree of rewriting — critical when you're trying to demonstrate sufficient paraphrase distance.
Try QuillBot for this →Grammarly's tone detection and suggestion engine is built for professional writing contexts. It'll flag passive voice, unclear phrasing, and suggest rewrites that hit the right register for business communication. The browser extension makes this work directly in Gmail or Outlook without copy-pasting. QuillBot can rewrite for "Formal" tone, but it doesn't read the surrounding context or learn your voice over time.
Try Grammarly for this →Grammarly doesn't have a summarizer. QuillBot does, and it handles long-form text reasonably well — you can paste an article and get a condensed version in bullet or paragraph format. It won't outperform a dedicated tool like Claude or ChatGPT for complex summarization, but for quick article or paper summaries it's sufficient and it's built into the same tool you're already using for paraphrasing. Speaking of which, if you're evaluating LLM-based summarization, our ChatGPT vs Claude comparison covers that territory.
Try QuillBot for this →QuillBot's "Simple" mode is designed to reduce complexity and make text more accessible. The "Expand" mode does the opposite — useful when you need to elaborate on a brief point. Grammarly doesn't offer this kind of targeted rewriting by complexity level. For content teams, educators, or anyone adapting material for different audiences, QuillBot's mode system is more practical.
Try QuillBot for this →After you paraphrase with QuillBot, the output still needs a grammar pass — QuillBot's built-in checker misses things. Grammarly is far more thorough at catching comma splices, subject-verb agreement errors, and awkward phrasing. Many users actually use both: QuillBot to paraphrase, Grammarly to clean up the result. If you can only afford one, this strength keeps Grammarly relevant.
Try Grammarly for this →The AI Map Verdict
For paraphrasing specifically: QuillBot wins clearly. It was built for this job. The eight paraphrase modes, the word-level diff view, the free tier, and the significantly lower price make it the better choice for anyone whose primary need is rewording existing text.
Grammarly is a better overall writing tool — but "better overall" doesn't mean better for this specific task. If you're spending $12–30/month on Grammarly primarily to paraphrase, that's the wrong tool at the wrong price. QuillBot Premium at ~$4.17/month (annual billing) handles paraphrasing, summarizing, and basic grammar correction for a fraction of the cost.
The exception: if you write professionally every day, already rely on Grammarly's grammar and tone tools across all your writing environments, and only need occasional light rewriting — staying with Grammarly makes sense. Don't pay for two tools when one covers your actual workflow. For everything else, start with QuillBot.
Decision Framework: Which Tool Fits Your Situation?
Run through this before you pay for either tool:
Choose Grammarly if…
- You write professionally every day in email, Docs, or Word
- Grammar, tone, and style corrections are your main pain point
- You need deep browser integration across multiple apps
- You want plagiarism checking with grammar in one tool
- You only need light or occasional rewriting
- Your employer covers the cost (business plan)
- You're writing original content and want polish, not rewording
Choose QuillBot if…
- Paraphrasing, rewording, or summarizing is your main task
- You're a student working with source material
- Budget matters — you want the most for less money
- You need different paraphrase styles (formal, simple, creative)
- You want to see exactly what words changed
- You need a summarizer alongside the paraphraser
- You want to try before paying (free tier is usable)
If you need both grammar checking at Grammarly's level and serious paraphrasing — use QuillBot to rewrite, paste the result into Grammarly to polish. The combined annual cost is still less than Grammarly alone on monthly billing.
Failure Modes and Limitations
Failure Mode 1 — QuillBot output sounds robotic on complex writing
QuillBot's paraphraser works by swapping synonyms and restructuring syntax. On technical, academic, or nuanced prose, this produces output that's technically correct but tonally flat or awkward. The meaning survives; the voice doesn't.
Fix:
Use QuillBot's output as a draft, not a final product. Run it through Grammarly or manually edit for voice. The "Fluency" mode typically produces more natural results than "Standard" on complex content.
Failure Mode 2 — Grammarly rewrites don't show what changed
When Grammarly rewrites a sentence, it replaces it wholesale. You don't get a side-by-side or highlighted diff. This makes it hard to evaluate whether the rewrite is actually better, or to partially accept changes.
Fix:
Use Grammarly's rewrite for short sentences where you can compare mentally. For paragraph-level rewrites, copy both versions into a text diff tool before accepting. QuillBot's UI is significantly better for this specific workflow.
Failure Mode 3 — QuillBot's free tier word limit creates friction for longer texts
At 125 words, the free tier handles a paragraph but not a page. Users who discover this mid-task often copy-paste in chunks, which breaks the comparison view and loses context between sections.
Fix:
Either upgrade to QuillBot Premium (the annual price is genuinely reasonable) or batch your text into logical paragraph units and process them separately. Longer continuous passages benefit from Premium anyway — the mode consistency across 500+ word inputs is noticeably better.
Failure Mode 4 — Using Grammarly for paraphrasing when you actually need summarizing
Grammarly can condense and shorten text, but it doesn't have a summarizer. Users who need to compress a 1,000-word article to 200 words find Grammarly's tools inadequate — they're designed for sentence-level tightening, not document-level summarization.
Fix:
Use QuillBot's Summarizer for condensing long texts. For more sophisticated summarization of complex documents, a full LLM like Claude or ChatGPT will outperform either tool — see our ChatGPT vs Gemini comparison for context on what those tools handle.
Failure Mode 5 — Treating paraphrased output as plagiarism-safe without checking
Both tools' paraphrasers can produce output that still closely mirrors the original — especially on short or highly specific source text. Assuming the paraphrased version is plagiarism-safe without running it through a checker is a common and risky assumption in academic contexts.
Fix:
Both Grammarly Premium and QuillBot Premium include plagiarism checkers. Run your paraphrased output through one before submitting. Don't rely on the degree of synonym-swapping as a proxy for originality.
Common Mistakes When Choosing Between These Tools
Mistake 1 — Paying for Grammarly Premium to paraphrase
Grammarly Premium costs 2–3x more than QuillBot Premium, and its paraphrasing features are secondary. Users who subscribe to Grammarly specifically because they want to reword text are overpaying for a tool that treats rewriting as a side feature. If paraphrasing is the job, QuillBot is the purpose-built tool at the purpose-built price.
Mistake 2 — Expecting QuillBot to fix grammar errors in the source text
QuillBot will paraphrase whatever you paste in — including the typos, incorrect punctuation, and grammatical errors from the original. Users often assume the Fluency mode will also clean up errors, but it doesn't do this reliably. Proofread your source text before paraphrasing, or run the output through a dedicated grammar checker afterward.
Mistake 3 — Choosing based on brand recognition instead of the actual task
Grammarly has significantly higher brand recognition and a larger marketing presence. Many users choose it by default without checking whether QuillBot exists or what it does. For paraphrasing, this default assumption costs real money and leads to a worse experience. Check what the tool is built for, not how familiar the name is.
Final Recommendation
Start with QuillBot Free. The 125-word limit is enough to test whether the output quality works for your use case. If you're regularly paraphrasing text — for academic work, content adaptation, research, or language learning — the Premium annual plan is one of the better-priced AI writing tools available.
Add Grammarly if you write a lot of original content, work in professional email or document environments, and find yourself wanting grammar and tone feedback beyond what QuillBot offers. The two tools are genuinely complementary — QuillBot rewrites, Grammarly polishes.
Skip Grammarly entirely if paraphrasing is your main task and budget is a concern. There's no version of this where paying $12–30/month for Grammarly is the right call when QuillBot handles the paraphrasing job better for less.
If you're weighing AI writing tools more broadly — including whether large language models replace both of these for specific tasks — the comparison between Claude vs Gemini covers how those models handle writing assistance tasks.
Methodology Note
This comparison is based on publicly documented features, published pricing tiers, and product documentation from Grammarly and QuillBot as of June 2026. Feature assessments reflect the tools' stated capabilities and known limitations from user-reported use cases. No claims are made about proprietary internal benchmarks. Pricing is sourced from official pricing pages and should be independently verified before purchase.
Pricing and features verified as of June 2026. Verify current pricing at grammarly.com/plans and quillbot.com/pricing before purchasing.