Grammarly vs QuillBot
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
The short answer
Both sides assessedGrammarly compared with QuillBot
Both are cheap writing assistants sold to individuals, and both include plagiarism and AI detection. QuillBot is a paraphrasing engine with a humanizer whose explicit purpose is helping machine text evade detectors, at $19.95 monthly or $8.33 on annual billing. Grammarly is a correction layer with far better application coverage, no humanizer, and real team governance at $12 a seat. Choose QuillBot if rewriting existing text is the job; choose Grammarly if the job is making everything your team writes correct and consistent.
QuillBot compared with Grammarly
The obvious head-to-head. Grammarly is the better correction layer, has deeper application coverage, and publishes real team pricing at $12 a seat with roles, snippets, and shared terminology. QuillBot is the better rewriter, is cheaper on annual billing at $8.33, and includes translation and citation work Grammarly does not. Grammarly also declines to sell a detector-evasion tool, which QuillBot does not. For a team, Grammarly. For an individual whose main task is reshaping text, QuillBot.
Choose Grammarly if
Small businesses and teams whose writing problem is quality and consistency across email, chat, proposals, and documents rather than volume of published articles, especially organizations with non-native English speakers, client-facing writers, or a support function that needs everyone to sound the same for $12 a seat.
Choose QuillBot if
Students, researchers, non-native English writers, and small-business writers whose recurring task is reshaping existing text rather than producing new articles, particularly anyone who needs paraphrasing, summarizing, translation, and citation work in one cheap subscription that follows them into Word and the browser.
Side by side
13 attributes| Attribute | Grammarly | QuillBot |
|---|---|---|
| Category | AI Writing | AI Writing |
| Starting price | $0 (Free), then $12 per member per month billed annually (Pro) (free plan available) | $0 (Free), then $8.33 per month billed annually ($99.95 per year) for Premium (free plan available) |
| Pricing model | Freemium per-member subscription with three billing cadences on the paid tier and a contact-sales enterprise plan; generation is metered by AI prompts rather than words. | Freemium individual subscription with monthly, quarterly, and annual billing on one paid tier, plus an unpriced team plan. |
| Free plan | Free includes grammar, spelling, and punctuation correction, tone detection, and 100 AI prompts per month, across every platform and extension. | Free includes paraphrasing up to 125 words in two modes, basic grammar correction, humanizing up to 125 words with six uses a day, 1,200-word summaries, limited AI detector access, 20 chats, 3 images a day, and 10MB of Flow storage. |
| Free trial | 7 days on Pro | No time-limited trial; the free tier is permanent and there is a 14-day money-back guarantee on Premium |
| Best for | Small businesses and teams whose writing problem is quality and consistency across email, chat, proposals, and documents rather than volume of published articles, especially organizations with non-native English speakers, client-facing writers, or a support function that needs everyone to sound the same for $12 a seat. | Students, researchers, non-native English writers, and small-business writers whose recurring task is reshaping existing text rather than producing new articles, particularly anyone who needs paraphrasing, summarizing, translation, and citation work in one cheap subscription that follows them into Word and the browser. |
| Setup time | Under ten minutes for an individual: install the extension, sign in, and it works. A team rollout takes an afternoon to configure roles, groups, Knowledge Share entries, and Snippets, plus whatever time your IT policy needs for extension approval. | Five minutes. Create an account, install the extension or the Word add-in, and paste text. There is nothing to configure beyond choosing a default paraphrasing mode. |
| Learning curve | Almost none for correction, which is the point. The generative prompts and the Feature Management Hub take a little exploration, and the real skill is deciding which suggestion categories to disable so the tool stops flattening your writing. | Very low. The only skill worth acquiring is knowing when the synonym slider has gone too far and produced a sentence that is technically different and semantically wrong, which happens often enough to require reading every output. |
| Platforms | Chrome, Edge, Safari, and Firefox extensions, macOS and Windows desktop apps, Microsoft Word add-in, iOS and Android keyboards and apps, Web editor | Web application, Chrome, Edge, and Safari extensions, macOS and Windows desktop apps, Microsoft Word add-in, iOS and Android keyboards and apps |
| Compliance | SOC 2 Type 2, GDPR, CCPA, Enterprise-grade privacy controls on Pro and above | GDPR, CCPA, Trust center published by Learneo |
| Founded | 2009 | 2017 |
| Headquarters | San Francisco, California, United States | Chicago, Illinois, United States, with roots at the University of Illinois |
| Ownership | Venture-backed, operating since October 2025 under the parent company name Superhuman | Owned by Learneo, Inc., the private company formerly known as Course Hero |
Strengths and limitations
Grammarly
Strengths
- Distribution into the applications where writing actually happens, across browsers, desktop, Word, and mobile keyboards, which no article generator in this category comes close to matching.
- Fifteen years of tuning on correction quality, particularly for non-native English writers, where the fluency suggestions solve a problem generic chat assistants handle clumsily.
- Team governance features including roles, user groups, Knowledge Share, Snippets, and brand tones are included at the $12 Pro price rather than gated behind a separate business tier.
- A permanently free tier that is a complete correction product, so evaluation costs nothing and a large share of individual users never need to pay.
Limitations
- No model transparency and no model selection. Grammarly will not tell you which large language model handles which feature, which is out of step with the category in 2026 and makes quality changes impossible to reason about.
- Generation is weak relative to a frontier chat subscription costing $20, so the 2,000-prompt allowance is not the reason to buy.
- Zero long-form SEO capability: no SERP analysis, no keyword workflow, no CMS publishing, no bulk generation, no internal linking.
- The clarity engine homogenizes voice, and its suggestions are calibrated for business correspondence rather than for writing with a deliberate style.
QuillBot
Strengths
- The paraphraser is the best dedicated rewriting engine on the market, with mode variety, a synonym control, side-by-side comparison, and coverage of 23 languages.
- Custom modes let you define a rewriting style in plain language and reuse it, which is more practical for a solo writer than most brand-voice features that cost ten times as much.
- Excellent surface coverage for the price: Chrome, Edge, and Safari extensions, macOS and Windows apps, a Word add-in, and iOS and Android keyboards.
- $99.95 a year for unlimited paraphrasing, plagiarism checking, translation, and summarizing is aggressive pricing against anything comparable.
Limitations
- Selling an AI detector and an AI humanizer in the same subscription is not a defensible integrity position, and the humanizer's effectiveness cannot be verified or guaranteed by anyone including the vendor.
- No model disclosure and no model selection. QuillBot will not say what powers the paraphraser, the chat, or the humanizer.
- No long-form generation, no research, no outlining, no SEO layer, and no CMS publishing, which rules it out of a content production pipeline entirely.
- Team pricing is unpublished, which breaks the self-serve promise for any business wanting more than a personal licence.
Pricing compared
Grammarly
Freemium per-member subscription with three billing cadences on the paid tier and a contact-sales enterprise plan; generation is metered by AI prompts rather than words.
- Free$0
- Pro$12
- EnterpriseCustom
At $12 a member on annual billing, Grammarly is fairly priced for what it uniquely does, which is correction and revision inside every application you already use, with team tone and snippet governance thrown in at no extra tier. Judged as a generative writing tool it is poor value: 2,000 prompts of an undisclosed model with no ability to choose it is a worse deal than a $20 frontier subscription, and the drafting quality is not competitive. The honest framing is that Pro is a $12 correctness and consistency layer with a generation feature attached, and it should be bought on the first half of that sentence. Free is genuinely usable and a large fraction of individual users never need to upgrade.
QuillBot
Freemium individual subscription with monthly, quarterly, and annual billing on one paid tier, plus an unpriced team plan.
- Free$0
- Premium$19.95
- TeamNot published
As an individual purchase at $8.33 a month on annual billing, QuillBot is good value if paraphrasing, summarizing, translation, and citation work are recurring tasks for you. The paraphraser is the best in its narrow class and the surrounding tools are competent. As a business purchase it is much weaker: there are no published seat prices, no publishing integrations, no brand governance, and no long-form generation, so the tool cannot occupy a slot in a content operation. And the comparison that matters is unflattering. A $20 frontier subscription rewrites text at least as well, in any register you can describe, with no word caps and a model you choose. QuillBot's remaining advantages are the Word add-in, the plagiarism checker, and the price on annual billing. Those are real, and they are narrower than the marketing suggests.
Editorial verdict on each
Grammarly
Grammarly is the only product in this category you buy for where it runs rather than for what it produces. The correction and revision layer is excellent after fifteen years of tuning, the fluency support for non-native English writers solves a real problem cleanly, and the 2026 repackaging put team roles, shared snippets, and brand tones at the $12 individual price instead of behind a business tier. Set against that: generation is the weak half of the product, there is no model transparency and no model picker, and nothing here helps you publish SEO articles. If you already pay $20 for a frontier assistant, Grammarly does not replace it and is not trying to; it complements it by working inside Gmail and Word where the assistant cannot reach. Buy it as a correctness and consistency layer for a team that writes a lot of email, support replies, and client documents. Do not buy it as an AI writer, and keep half an eye on the fact that the company now calls itself Superhuman and has already deleted one of its acquired brand names.
Read the full Grammarly profileQuillBot
QuillBot is an excellent paraphraser wrapped in a competent suite, sold cheaply to individuals and awkwardly to teams. If your recurring work is reshaping text that already exists, especially across languages or for academic output, $99.95 a year buys the best dedicated rewriting engine available plus plagiarism checking, citations, translation, and a Word add-in, and the free tier lets you verify all of that before paying. Two things should give a business buyer pause. There is no published team price and no publishing, governance, or long-form capability, so QuillBot cannot hold a slot in a content operation. And the product markets an AI detector and an AI humanizer in the same subscription, presenting both as integrity features, which they cannot both be. Buy it as a personal writing utility. Do not buy it as a content strategy, and do not build one on the assumption that the humanizer will keep working.
Read the full QuillBot profileGrammarly profile last reviewed 2026-08-22; QuillBot last reviewed 2026-08-22. Pricing is compiled from public sources and can change without notice. See our methodology.