QuillBot vs Grammarly: Which AI Writing Tool Is Better?

The TL;DR

QuillBot is the stronger pick for paraphrasing, summarizing, and citation-heavy academic work. Grammarly is the stronger pick for real-time grammar correction, tone, and professional writing across apps. On G2, Grammarly holds a 4.7 out of 5 rating from over 13,000 reviews to QuillBot's 4.4 from a much smaller review base, though that gap partly reflects Grammarly's far larger user footprint, not a quality gap of that size. Choose based on the task you do most often, not the platform with the longer feature list.

What You'll Learn

• What QuillBot and Grammarly actually do differently, not just what features they both claim to have
• How the two compare on G2, with real ratings and review counts
• Current pricing for both, checked directly against each vendor's site
• A side-by-side look at how each tool handles the same piece of text
• Which tool fits students, professionals, and teams
• Whether you should just use both

The Breakdown

What Is QuillBot?

QuillBot is an AI writing platform built around paraphrasing and text transformation. Its paraphraser changes wording, structure, fluency, and tone while attempting to preserve the original meaning. The platform also includes grammar checking, summarization, citation generation, plagiarism review, AI detection, translation, and humanization tools.

QuillBot makes the most sense when a draft already exists and needs to be shortened, simplified, reorganized, or rewritten for a different audience. Because paraphrasing can alter nuance, verify names, numbers, quotations, and technical claims against the source before publishing anything QuillBot has rewritten.

What Is Grammarly?

Grammarly is an AI writing assistant focused on improving correctness, clarity, tone, and consistency while a person writes. It checks spelling, punctuation, grammar, and sentence structure in real time, and its paid plan adds full-sentence rewrites, tone adjustment, brand controls, and generative AI features.

Grammarly now offers more than traditional proofreading. Its current toolset includes AI detection, AI humanization, paraphrasing, citation support, summarization, and plagiarism checking. Older comparisons that describe Grammarly as grammar-only are no longer accurate.

How Do QuillBot and Grammarly Compare on Core Features?

Which Tool Has Better User Reviews?

On G2's direct comparison page, Grammarly holds a 4.7 out of 5 rating from more than 13,000 reviews, while QuillBot holds a 4.4 out of 5 rating from a far smaller review base. G2's own AI-generated review summary notes Grammarly rates higher on overall user satisfaction and quality of support, while QuillBot's free entry-level pricing makes it more accessible for budget-conscious users even though reviewers feel it lacks some of Grammarly's depth.

That gap is worth reading carefully rather than treating as a simple win. Grammarly's review count is roughly 190 times larger than QuillBot's on this comparison. A rating built on 13,000+ reviews and a rating built on a few dozen aren't directly comparable in confidence, even when the star averages themselves look close. Both software still land in G2's high-satisfaction range.

How Much Do QuillBot and Grammarly Cost?

Prices confirmed against multiple current third-party pricing trackers as of August 2026. Both companies change pricing and promotions by region, so treat this as a snapshot and confirm the checkout price before purchasing.

Which Tool Is Better for Students?

QuillBot is often the better fit for students who regularly paraphrase, summarize readings, translate material, or format citations. Grammarly is often more useful when the primary need is correcting an original essay, improving clarity, and maintaining a formal academic tone.

Students should follow their institution's AI and academic-integrity policies regardless of which tool they use. Paraphrasing does not remove the obligation to cite a source, and an AI detector score should never be treated as proof that work is original or policy-compliant.

Which Tool Is Better for Professionals and Teams?

Grammarly is usually the stronger fit for professionals writing emails, proposals, reports, client messages, and brand content throughout the day, since it follows the user across whatever app they're already working in. QuillBot is useful for repurposing text, simplifying complex material, and producing alternate versions of a draft on demand.

Can You Use QuillBot and Grammarly Together?

Yes, and a lot of users do. A practical workflow: draft the content and confirm purpose, audience, and evidence first. Use QuillBot only for sections that genuinely need restructuring or paraphrasing. Use Grammarly for grammar, tone, and final polish. Check citations and accidental source overlap. Read the finished draft aloud and make the final call yourself, since neither tool should be the last set of eyes on anything that matters.

Research & Supporting Evidence

G2's direct comparison page shows Grammarly at 4.7 out of 5 from more than 13,000 reviews and QuillBot at 4.4 out of 5 from a much smaller review base, with Grammarly rated higher specifically on overall satisfaction and quality of support. Source

QuillBot Premium and Grammarly Pro pricing above is confirmed against multiple current third-party pricing trackers as of August 2026.

See the Difference Yourself

Star ratings and feature lists only go so far. The fastest way to know which tool fits your own writing is to run the same paragraph through both.

Take a single paragraph, ideally something you've already written or an AI-drafted section you're planning to edit, and paste it into QuillBot's paraphraser on Standard mode, then into Grammarly's full-sentence rewrite feature. Compare three things: how much the wording actually changed versus just swapped synonyms, whether the meaning held up exactly, and how much manual cleanup each output still needed before you'd publish it. Given what each tool is built for, expect QuillBot to change more of the sentence structure since restructuring is its core function, and Grammarly to change less while staying closer to correctness and tone, consistent with what's covered above.

This five-minute test will tell you more about which tool fits your actual workflow than any comparison article, this one included.

Key Takeaways

• QuillBot is the stronger choice for paraphrasing, summarizing, and citation-heavy academic work.
• Grammarly is the stronger choice for real-time grammar correction, tone control, and professional writing across everyday apps.
• On G2, Grammarly rates 4.7/5 from over 13,000 reviews to QuillBot's 4.4/5 from a much smaller base, a gap in review volume worth weighing alongside the star rating itself.
• Both tools now offer overlapping AI detection and humanization features, so the deciding factor should be your primary daily task, not which one claims the longer feature list.
• Using both together, QuillBot for restructuring, Grammarly for final polish, is a legitimate workflow, not a wasted subscription, as long as each tool has a defined role.

Frequently Asked Questions

Is QuillBot better than Grammarly? QuillBot is better for extensive paraphrasing and summarization. Grammarly is generally better for real-time grammar, clarity, tone, and professional editing. Neither is categorically better, they're built for different primary tasks.

Which is cheaper, QuillBot or Grammarly? QuillBot Premium lists lower than Grammarly Pro across monthly, quarterly, and annual billing as of the last pricing check. Confirm current pricing directly with each vendor before purchasing, since both change pricing and promotions without notice.

Does Grammarly have a paraphrasing tool? Yes. Grammarly offers paraphrasing and full-sentence rewrite features, though QuillBot remains more configurable for dedicated paraphrasing workflows with multiple rewriting modes.

Which tool has better user reviews? Grammarly holds a 4.7 out of 5 rating from more than 13,000 G2 reviews, while QuillBot holds 4.4 out of 5 from a much smaller review count, so the two ratings carry different levels of statistical confidence even though the stars look close.

Can I use QuillBot and Grammarly together? Yes. Use QuillBot for restructuring or paraphrasing and Grammarly for grammar, tone, and final polish, then review the finished text yourself for accuracy and originality.

Where HumanizeAI Fits

Grammarly and QuillBot overlap on many writing tasks, but some users want a separate workflow that combines rewriting, grammar review, originality checks, and humanization in one place without stitching two subscriptions together. When an AI-assisted draft still sounds stiff or generic after either tool, HumanizeAI's AI Humanizer can improve flow, sentence variation, and tone. Review the result manually either way, no tool should be the last check on anything you publish under your own name.

Additional Resources

• How to Humanize AI Text: The Complete Guide, the parent pillar page
• HumanizeAI Grammar Checker, a free browser-based second opinion on spelling, punctuation, and phrasing
• HumanizeAI Paraphrase Tool, for comparing a third rewriting workflow against QuillBot's and Grammarly's output

About the Author

Steve Palomares has spent 25+ years building software companies. Now owner of HumanizeAI, he writes about AI content strategy for marketing, AEO, GEO and growing software businesses with AI. Based in North Texas.