QuillBot vs Grammarly for Paraphrasing: Honest Comparison

Quick verdict: For paraphrasing, QuillBot wins clearly. It is purpose-built for the job, offers 9 dedicated rewriting modes, and does not require an account to use. Grammarly is the better grammar correction engine — arguably the best available — but its paraphrasing feature is a bolt-on addition to a grammar product, and it shows. These are two tools with different primary strengths, and you should pick based on what you actually need.

Overview

It is tempting to compare QuillBot and Grammarly as if they are direct competitors. They are not — at least not in the paraphrasing category. They overlap in the Venn diagram of writing tools, but they are built around fundamentally different purposes.

QuillBot launched in 2017 as a paraphrasing-first product. That focus has never shifted. Today it has 35 million+ users, a 4.9/5 rating on Trustpilot, and a feature set that orbits the core paraphrasing engine: 9 rewriting modes, a grammar checker, a summarizer, and a plagiarism checker (premium). When you open QuillBot, paraphrasing is the product. Everything else is built around it.

Grammarly launched in 2009 as a grammar correction tool and built its 30 million+ user base on that foundation. It is genuinely excellent at what it was designed for: catching grammar errors, suggesting clearer phrasing, flagging passive voice, and offering deep style analysis. The paraphrasing feature was added later — and it functions more like a convenience shortcut than a core capability.

That distinction shapes everything in this comparison.

Feature Comparison

Paraphrasing Quality and Modes

This is the section that matters most if paraphrasing is your primary goal.

QuillBot offers 9 rewriting modes: Standard, Fluency, Formal, Academic, Simple, Creative, Shorten, Expand, and Custom. Each mode produces meaningfully different output. Academic mode tightens language and removes colloquialisms. Creative mode allows more deviation from the source. Custom mode lets you define your own style targets. The range is genuinely useful, and you can feel the difference between modes — they are not cosmetic variations.

The output quality is consistently strong. QuillBot's paraphrasing engine understands context at the sentence level, handles multi-sentence paragraphs well, and rarely produces awkward syntax. The 125-word limit on the free tier is a real constraint, but the quality within that limit is reliable.

Grammarly's paraphrasing works differently. Rather than a dedicated rewriting mode, it surfaces suggested alternatives as part of its broader suggestion panel. You can ask it to rephrase a sentence, and it will offer one or two options. For short, isolated sentences, this works adequately. For longer passages or structured rewrites, it falls short.

The output from Grammarly's paraphrasing tends toward the formal and cautious — which makes sense given the product's grammar-correction roots. It prioritizes correctness over variety, which means outputs can feel repetitive across different source texts. There are no modes, no tone controls specific to paraphrasing, and no way to adjust how aggressively it departs from the original.

The verdict here is not close. QuillBot's paraphrasing is more capable, more flexible, and more purpose-built. If paraphrasing is why you opened the tab, QuillBot is the right tool.

Grammar Correction

This section belongs to Grammarly, and it is not a competition.

Grammarly's grammar engine is the most sophisticated in this category. It catches subject-verb disagreements, misplaced modifiers, comma splices, incorrect apostrophe usage, and a long list of errors that other tools miss. More importantly, it explains why something is wrong — not just that it is wrong — which is valuable for anyone trying to improve their writing rather than just fixing one document.

The style layer goes even further. Grammarly can assess the tone of your writing (is it confident or hedging?), flag overly complex sentence structures, identify passive voice patterns, and suggest word choices more appropriate for a specific audience. At the enterprise level, it can enforce custom style guides across a team.

QuillBot has a grammar checker, and it is functional. It catches obvious errors — run-on sentences, basic punctuation mistakes, common word confusions. But it does not have the depth, accuracy, or explanatory detail of Grammarly's engine. It was not designed to.

If grammar correction is your primary need, Grammarly is the better tool. It is not even a matter of degree — the two products are operating at different levels in this area.

Free Tier

Both tools offer free access with meaningful restrictions.

QuillBot's free tier gives you 125 words per paraphrasing request without creating an account. You get access to Standard and Fluency modes only — the academic, creative, and custom modes are locked behind premium. The 125-word cap is enough for short paragraphs, but becomes inconvenient for longer texts that need to be split across multiple requests.

Grammarly's free tier requires you to create an account before using anything. Once you have an account, you get access to basic grammar correction and a limited number of paraphrasing suggestions. Advanced tone detection, vocabulary enhancement, full paraphrasing features, and plagiarism checking are all premium-only.

For pure accessibility, QuillBot's no-account free tier is more frictionless. Grammarly's account requirement is a minor but real barrier if you just want to try the tool quickly.

Pricing

QuillBot Premium runs $8.33 per month on an annual plan, or up to $19.95 per month if you pay monthly. It unlocks all 9 paraphrasing modes, removes the word cap, and adds the plagiarism checker and full grammar suite.

Grammarly Premium runs $12 to $30 per month depending on the plan and billing cycle. Business plans with team features and custom style guides are higher. For what you get on the paraphrasing side specifically, Grammarly's premium pricing is harder to justify compared to QuillBot.

If paraphrasing is the reason you are subscribing, QuillBot delivers more relevant features at a lower price point. If you need the full Grammarly experience — deep grammar analysis, style coaching, enterprise integration — then the premium tier is worth evaluating on those merits, not the paraphrasing feature.

Integrations

Both tools have Chrome extensions and integrate with Google Docs and Microsoft Word. For most users, this is equivalent functionality.

The practical difference is in how those integrations feel. Grammarly's sidebar is deeply embedded in the Google Docs experience — it surfaces suggestions in real time as you type, without requiring you to switch between tools. For writers who draft and edit entirely in Docs or Word, this is a genuinely smooth workflow.

QuillBot's integrations are solid, but the paraphrasing workflow requires selecting text, clicking the QuillBot button, and accepting or rejecting the suggestion. It is one more step — not a dealbreaker, but a slightly more deliberate process.

For integration depth, Grammarly has a small edge, particularly for users who want passive grammar feedback without actively triggering the tool.

Verdict by Use Case

You need to paraphrase a lot of text regularly — QuillBot. It is built for this. The mode variety, the quality of output, and the no-account free tier all point in the same direction.

You are a student submitting academic writing — QuillBot, especially with premium. The Academic mode, the summarizer, and the plagiarism checker form a coherent package for academic work.

You want the best grammar correction available — Grammarly. Nothing else in this category matches its grammar engine or style coaching depth.

You write professionally and need tone and clarity feedback — Grammarly. Its style suggestions go beyond grammar and are particularly useful for business writing.

You want to try something without creating an account — QuillBot. No sign-up required for the free tier.

You are on a budget and primarily need paraphrasing — QuillBot Premium at $8.33/mo is significantly cheaper and more paraphrasing-focused than Grammarly Premium.

You need enterprise writing standards enforced across a team — Grammarly Business. No other tool in this comparison comes close for that use case.

Don't Want to Pay for Either?

If QuillBot's free tier feels too restrictive and Grammarly's pricing feels hard to justify for paraphrasing specifically, there is a free alternative worth knowing about.

RewritePal is a free, no-sign-up paraphrasing tool with no word limits. It offers 15+ tone options — more granular than QuillBot's 9 modes — and includes features you will not find in either QuillBot or Grammarly: an AI Humanizer that makes AI-generated text sound more human, an Impersonator mode that rewrites content in the voice of a specific persona or role, and a Document Editor with inline diff review so you can accept or reject AI suggestions word by word.

There is no subscription, no account, and no word cap. The only limit is 300 requests per day per IP, which covers virtually all real-world use. If you want serious paraphrasing capability without opening your wallet, RewritePal is worth trying before committing to a paid plan elsewhere.

Frequently Asked Questions

Is QuillBot better than Grammarly for paraphrasing?

Yes, clearly. QuillBot was designed specifically for paraphrasing and offers 9 dedicated rewriting modes, a no-account free tier, and output quality purpose-built for this task. Grammarly added paraphrasing as a secondary feature to a grammar product, and the results reflect that origin. For paraphrasing specifically, QuillBot is the better tool.

Can Grammarly replace QuillBot?

Not for paraphrasing. Grammarly's paraphrasing suggestions are limited in scope, offer no mode variety, and tend toward over-formal output. It can replace QuillBot for grammar correction — and does so more effectively — but not for the core paraphrasing use case.

Do I need a paid plan for either tool to paraphrase effectively?

For QuillBot, the free tier is usable for short texts but becomes limiting for longer passages (125-word cap per request). Premium removes that cap and unlocks all modes. For Grammarly, paraphrasing on the free tier is minimal — premium is almost required to access it properly. If cost is a concern, a free tool like RewritePal covers paraphrasing with no limits and no subscription required.