Grammarly vs QuillBot: which is right for your business?
Choose Grammarly if you want a writing assistant that checks grammar, clarity and tone as staff type across email, documents and browsers, with enterprise controls for larger teams. Choose QuillBot if the main job is rewording, summarising and paraphrasing drafts, with a grammar checker, citation generator and plagiarism checker bundled in. Both support Australian English spelling. Grammarly suits teams wanting consistent, polished writing everywhere; QuillBot suits individuals and small teams who mostly rework existing text.
Last reviewed October 2026
Side-by-side comparison
| Grammarly | QuillBot | |
|---|---|---|
| Best at | Real-time grammar, clarity and tone suggestions wherever staff write. | Paraphrasing in several modes, summarising and quick rewording. |
| Australian English | Set the dialect to Australian English in account settings; it covers spelling, grammar and punctuation conventions. | Grammar checker supports Australian English alongside US, UK and Canadian English. |
| Plan structure | Free plan, Pro plan, and Enterprise sold through Superhuman Go. | Free plan with word and mode limits, Premium subscription and team options. |
| Where it works | Browser extension, desktop apps, Microsoft Office, Google Docs, email and mobile keyboards. | Web app, browser extensions, Microsoft Word, and desktop and mobile apps. |
| AI writing features | Generates and rewrites text from prompts, adjusts tone and applies brand style guides on business plans. | Paraphraser, summariser, translator, AI chat and humaniser tools. |
| Plagiarism and AI detection | Plagiarism checker and AI-text detector on paid plans. | Plagiarism checker on Premium and a free AI-content detector. |
| Team and admin controls | Enterprise adds SSO, data loss prevention, audit logs and controls over which apps it runs in. | Team billing and management, with fewer enterprise controls. |
| Data and training | Grammarly says enterprise customer content is not used to train its models; check settings on individual plans. | Check QuillBot's privacy settings and terms; avoid confidential text on free plans. |
Choose Grammarly if…
- →Staff write client emails and proposals all day and need consistent, polished output
- →You want writing help inside Outlook, Gmail, Word and Google Docs without switching apps
- →Your organisation needs SSO, data loss prevention and admin controls
- →You want brand style and tone applied across the team
Choose QuillBot if…
- →Your main need is rewording or summarising existing drafts
- →Writers want several paraphrasing modes to try different tones and lengths
- →You produce research-based content that needs citations
- →You want many writing tools in one subscription for an individual or small team
For Australian businesses
Set both tools to Australian English so they stop flagging spellings such as organisation and colour. Grammarly reads what staff type in connected apps, so treat it as a data-sharing decision under the Privacy Act 1988 and consider switching it off in systems holding health, legal or financial records. Neither vendor offers Australian data residency. Paraphrasing someone else's content can still infringe the Copyright Act 1968, and rewritten marketing claims must remain accurate under the Australian Consumer Law. Both bill in US dollars.
Our verdict
Grammarly is the better tool for most Australian businesses because it improves writing everywhere staff already work and offers proper enterprise controls. QuillBot is better value for individuals and small teams whose main task is rewording, summarising and citing, such as content writers and researchers. If you choose QuillBot, set clear rules on paraphrasing other people's work. If you choose Grammarly, set a policy on which apps it may run in, given how much text it sees.
Full reviews
Grammarly
Free plan + paidWriting
A writing assistant that checks spelling, grammar, clarity and tone as you type in email, documents and browsers. Paid plans add sentence rewrites, tone adjustment and plagiarism and AI-text detection. Its parent company now trades as Superhuman.
Best for: Staff who write client emails, proposals and reports every day
Grammarly review →QuillBot
Free plan + paidWriting
A writing toolkit centred on a paraphrasing tool with several rewriting modes. It also includes a grammar checker, summariser, translator, citation generator, plagiarism checker and AI-content detector, available on the web, as browser extensions and as desktop and mobile apps.
Best for: Students and writers rewording their own drafts for clarity
QuillBot review →
Frequently asked questions
Does Grammarly support Australian English?
Yes. Grammarly lets you choose Australian English as your dialect in the browser extension, editor or mobile app, and the setting follows your account across devices. It recognises Australian spelling, grammar and punctuation conventions, so it stops flagging words such as organisation and colour.
Does QuillBot support Australian English?
Yes. QuillBot's grammar checker supports Australian English alongside US, UK and Canadian English. Check the dialect setting before you start, and review paraphrased text for spelling, because rewording can introduce word choices that do not suit Australian readers.
Is it acceptable to use QuillBot to rewrite competitors' content?
No. Rewording another business's content does not make it yours, and copying its substance can still infringe the Copyright Act 1968. Use QuillBot on your own drafts, cite sources properly, and make sure rewritten claims remain accurate and supportable under the Australian Consumer Law.
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Still deciding?
AI Lab Australia can trial both tools against your own documents and workflows, and set up the one that fits with the right privacy controls.