Grammarly vs QuillBot in 2026: Everywhere-you-write polish vs the cheapest full writing suite
Grammarly integrates into 500,000+ apps and sites for real-time grammar and tone help. QuillBot bundles paraphrasing, grammar, plagiarism, and AI detection into one subscription starting around $9.95 a month.
Grammarly
QuillBot- QuillBot Premium is priced lower (roughly $9.95/mo annually) than Grammarly Pro ($12/mo annually) while bundling more tools: paraphraser, plagiarism checker, AI detector, AI humanizer, summarizer, and citation generator all in one plan.
- Grammarly works across 500,000+ apps and sites via browser extension; QuillBot's Chrome extension has 6 million active users and a 4.7 rating but has narrower third-party app coverage.
- Grammarly Enterprise supports unlimited style guides and brand tones for team-wide voice consistency. QuillBot's Team Plan adds usage metrics and centralized billing, not brand-tone enforcement.
- QuillBot has no full paragraph rewrite feature comparable to Grammarly Pro; it rewrites through its paraphraser, which operates on selected text rather than full-document flow suggestions.
- Neither tool offers a public developer API for programmatic access on any plan.
Grammarly and QuillBot both started as grammar tools and both now cover paraphrasing, tone, plagiarism, and AI detection, which makes them genuinely interchangeable for a lot of daily writing tasks. The difference is where each one puts its strongest work. Grammarly's real-time inline suggestions and Enterprise-grade brand tone tools make it the better fit for teams that need consistent voice at scale. QuillBot's paraphraser remains the deeper tool for rewording text without losing meaning, and its Premium tier at roughly $9.95 per month bundles more (plagiarism, AI detection, AI humanizer, summarizer, citation generator) for less money than Grammarly Pro at $12. For students and freelance writers on a budget, QuillBot's all-in-one pricing wins. For professionals and teams who live inside Gmail, Slack, and Google Docs, Grammarly's ubiquity wins.
The tools at a glance
Grammarly
AI writing assistant for grammar, clarity, tone, and brand consistency across every platform you write on
Grammarly corrects grammar, improves clarity, adjusts tone, and rewrites full paragraphs across the web and desktop, via browser extension, desktop app, Word plugin, and mobile keyboard. Suggestions appear inline wherever you write: Gmail, Google Docs, Slack, LinkedIn, and beyond.
Pro, at $12 per member per month billed annually, adds full paragraph rewrites, tone adjustment toward a target style, and plagiarism and AI content detection. Enterprise adds unlimited style guides and brand tones, SAML SSO, and data loss prevention for teams that need consistent voice across every writer.
AI text generation is capped at 100 prompts a month on Free and 2,000 on Pro, which positions Grammarly as a refinement tool first and a content generator a distant second. There is no SEO scoring or content brief feature.
| Feature | Free $0/mo | Pro $12/mo (annual) | Enterprise Contact sales |
|---|---|---|---|
| Grammar and spelling corrections | Yes | Yes | Yes |
| Full paragraph rewrites | No | Yes | Yes |
| Tone adjustment | No | Yes | Yes |
| Plagiarism and AI detection | No | Yes | Yes |
| AI text generation prompts | 100/mo | 2,000/mo | Unlimited |
| Style guides / brand tones | No | 1 each | Unlimited |
QuillBot
All-in-one AI writing suite trusted by 35M+ writers for paraphrasing, grammar, plagiarism detection, and content creation
QuillBot is built around making existing text better: its paraphraser, grammar checker, plagiarism detector, and AI humanizer all operate on writing you already have. The paraphraser offers 10+ modes (Standard, Fluency, Academic, Creative, Formal, and more), unlimited on Premium versus a 125-word cap on Free.
Premium, at roughly $9.95 per month billed annually, bundles the paraphraser, an advanced grammar checker covering 6 languages, a plagiarism checker across 100+ languages, unlimited AI Detector checks, an AI Humanizer, unlimited AI Chat, and 300 monthly AI-generated images, all in one subscription.
The Chrome extension has 6 million active users and a 4.7 rating, working inside Gmail, Google Docs, LinkedIn, and Notion. There is no public developer API and no native CMS integrations like WordPress or HubSpot beyond the browser extension.
| Feature | Free $0/mo | Premium ~$9.95/mo (annual) | Team Plan Contact for pricing |
|---|---|---|---|
| Paraphrasing | Up to 125 words | Unlimited | Unlimited |
| Grammar checker | Basic | Advanced | Advanced |
| Plagiarism checker | No | 25,000 words/mo | 25,000 words/mo |
| AI Detector | Limited | Unlimited | Unlimited |
| AI Humanizer | 125 words, 6/day | Unlimited + insights | Unlimited + insights |
| Team usage metrics | No | No | Yes |
Head-to-head feature comparison
| Feature | Grammarly | QuillBot |
|---|---|---|
| Real-time grammar checking | Yes | Yes |
| Paraphrasing / full rewrites | Yes (full paragraph rewrites, Pro+) | Yes (10+ paraphrase modes) |
| Tone adjustment | Yes (Pro+) | Limited (via paraphrase modes) |
| Plagiarism checker | Yes (Pro+) | Yes (Premium+) |
| AI content detector | Yes (Pro+) | Yes (Premium+) |
| AI humanizer | No | Yes (Premium+) |
| Team brand-tone tools | Yes (Enterprise style guides/brand tones) | No (usage metrics only) |
| Browser extension user base | Browser extension across 500,000+ sites | 6M Chrome extension users, 4.7 rating |
| API access | No | No |
| Free tier | Yes | Yes |
| Starting paid price | $12/mo (Pro, annual) | ~$9.95/mo (Premium, annual) |
Which should you choose?
QuillBotGrammarlyQuillBotGrammarlyQuillBotBoth tools converge on the same feature set (grammar, tone, plagiarism, AI detection) but reach it from opposite directions. Grammarly started as a grammar checker and grew outward into brand consistency and enterprise controls. QuillBot started as a paraphraser and grew outward into a bundled writing suite. If your primary need is rewording someone else's or your own draft without losing meaning, QuillBot's dedicated paraphrase modes go deeper. If your primary need is consistent voice across a team writing customer-facing content, Grammarly's Enterprise tier is purpose-built for that in a way QuillBot's Team Plan is not.
Bottom line
Choose QuillBot if you want the most writing tools bundled at the lowest price, especially for paraphrasing and academic work. Choose Grammarly if you need enterprise-grade brand voice consistency or simply want the assistant with the widest reach across the apps you already use daily.
Frequently asked questions
Is QuillBot cheaper than Grammarly?
Yes. QuillBot Premium is roughly $9.95 per month billed annually, compared to Grammarly Pro at $12 per member per month billed annually, and QuillBot bundles more tools (plagiarism checker, AI detector, AI humanizer, summarizer, citation generator) into that single price.
Which tool has better paraphrasing, Grammarly or QuillBot?
QuillBot's paraphraser is the more dedicated tool, with 10+ modes including Academic, Creative, Formal, and Custom, unlimited on Premium. Grammarly's full paragraph rewrite feature works well for polishing existing text but does not offer the same range of stylistic paraphrase modes.
Does either Grammarly or QuillBot offer an API?
No. Neither Grammarly nor QuillBot offers a public developer API on any plan, which rules both out for teams that need to embed writing assistance into automated content pipelines.
Which is better for a small content team that needs consistent brand voice?
Grammarly, specifically its Enterprise tier, which supports unlimited style guides and brand tones applied automatically to every team member's writing. QuillBot's Team Plan adds usage metrics and centralized billing but does not include brand-tone enforcement.
Is QuillBot or Grammarly better for students?
QuillBot has the edge for students specifically, since its Learneo parentage (shared with Course Hero and Scribbr) means the plagiarism checker, citation generator, and AI Detector are calibrated toward academic integrity use cases, all bundled into the same Premium subscription.