AI Compare · AI tools
Grammarly: plans, prices, strengths and limits
Grammarly is free for spelling, grammar and punctuation checks, with 100 generative AI prompts a month. Grammarly Pro costs $30 a month, $60 every three months or $144 a year per member, according to Grammarly's help center, and adds 2,000 prompts a month.
Prices for United States, before sales tax Data release 2026.11.07-2, Nov 7, 2026 Rules 2.5.0
- Made by
- Superhuman Platform Inc.
- Individual plans
- 2, one free
- Paid plans
- $30 a month
- Facts checked
- Nov 4, 2026
Quick verdict
Grammarly checks grammar, spelling and tone as you type in apps and browsers, and adds AI rewriting, AI Chat and plagiarism checks. Free covers spelling, grammar and punctuation checks, tone detection and 100 generative AI prompts a month; the Paraphraser gives a limited number of suggestions a day. Pro adds full-sentence rewrites, tone adjustment, English fluency, plagiarism and AI text detection, Citation Finder and 2,000 prompts a month per member. Grammarly's help center lists Pro at $30 a month, $60 every three months, or $144 a year paid up front ($12 a month on average), priced per member for up to 149 seats. Our network was shown euro prices on the plans page, so these US dollar prices come from that help article. Tax depends on your billing address and may be shown separately at checkout or included in the price.
On rights, Grammarly's Terms treat the inputs and outputs of its generative AI features as your content and say "You own all right, title, and interest in and to User Content", with no plan restriction stated. This is an ownership clause rather than an explicit sentence about commercial use. On training, a Product Improvement and Training setting, on by default, lets Free, Premium and single-user Pro accounts opt out of Grammarly using their content.
Grammarly's plan lineup is not fully settled on its own pages: help articles mention a Grammarly Plus plan that is not on the plans page, and a Premium plan sold only through the App Store and Google Play has no US price on grammarly.com. This verdict rests on what Grammarly documents, not on our tests, which we have not run yet.
Strengths and limits
Strengths
- Checks in the apps you already useOn every plan, the browser extension for Chrome, Safari, Firefox and Edge works in Gmail, Google Docs, Google Sheets and Google Forms. Grammarly for Windows works in Word, Excel, PowerPoint and Outlook, and there are Mac, iPhone, iPad and Android apps.
- Free grammar checking without a prompt countFree checks spelling, grammar and punctuation as you write and shows tone, with multilingual suggestions on all plans. Spelling and grammar suggestions do not count against the 100 monthly AI prompts.
- Rewriting and citations on ProPro adds full-sentence rewrites with a click, tone adjustment and fluency suggestions. Its Paraphraser has six styles (Humanize, Academic, Professional, Streamlined, Creative and Simple) plus custom voices, and Citation Finder links web sources for claims and formats APA, MLA or Chicago citations.
- You own your textGrammarly's Terms say the inputs and outputs of its generative AI features are your User Content and that you own all right, title and interest in it. No plan restriction is stated.
- Training opt-out and a data reportFree, Premium and single-user Pro accounts can turn off the Product Improvement and Training setting in account privacy or data settings. You can also request a personal data report, ready within hours as plain text.
Limits
- Training is on by defaultPrivacy limit. The Product Improvement and Training setting starts on, so Grammarly may use your content until you turn it off. The help article names Free, Premium and single-user Pro accounts; multi-member Pro is not mentioned.
- US prices from the help center onlyUnverified point. The plans page showed euro prices from our network, so the $30, $60 and $144 Pro prices come from Grammarly's support article, which says the US dollar is the default currency. Whether tax is included can vary at checkout.
- Free is checks, not rewritesPlan limit. Full-sentence rewrites, tone adjustment and fluency need Pro, and Free's Paraphraser gives a limited number of suggestions a day. Citation Finder is listed for Pro and Plus subscribers, and no page says Free can use it.
- Plans and prompt counts disagreeConflict. The plans page gives Pro 2,000 prompts per member a month and Free 100, while a prompts help article still says Premium users get 1,000. Help articles mention a Grammarly Plus plan that is not on the plans page, with no price found.
- Gaps in what is documentedNot verified. Grammarly does not name its AI models or a context size. Whether any plan shows ads, and which plans include the Gmail, Outlook and Drive connectors of Superhuman Go, are not stated.
Based on what Superhuman Platform Inc. documents for each plan, not on our tests.
Who it suits
A good fit if you
- Catching spelling, grammar and punctuation mistakes as you type, for free
- Writing in Gmail, Google Docs and Microsoft Office on Windows
- Rewriting whole sentences and adjusting tone, on Pro
- Checking a paper for plagiarism and AI-written text, on Pro
- Teams of up to 149 people on one Pro plan, priced per member
Look elsewhere if you
- Rewriting full sentences on Free: that needs Pro
- Finding academic papers: searching published research is not documented
- Keeping content out of training without changing a setting: it is on by default
- A Word add-in on Mac: it was discontinued in favor of Grammarly for Mac
Plans and prices
| Plan | Monthly | Yearly | Checked |
|---|---|---|---|
| Grammarly Free | Free | Nov 4, 2026 | |
| Grammarly ProSupport article: annual subscription $144 USD/member/year ($12 average a month); a quarterly option is $60 USD per three months. | $30 a month | $144 a year | Nov 4, 2026 Source |
Prices for United States, before sales tax unless a plan says otherwise. A yearly plan is paid up front and is not cancel-any-time.
Features by plan
What Superhuman Platform Inc. documents for each plan. A hatched mark means we could not verify it, which is not the same as "not offered".
| Feature | Grammarly Free | Grammarly Pro |
|---|---|---|
| Models and limits | ||
| Top models included | Unclear | Unclear |
| Context window | Unclear | Unclear |
| Models from several companies | Unclear | Unclear |
| General-purpose assistant | Yes | Yes |
| Research and sources | ||
| Web search with sources | Unclear | Yes |
| Deep research reports | Unclear | Unclear |
| Research paper search | Unclear | Unclear |
| Files and data | ||
| File and document uploads | Unclear | Unclear |
| Spreadsheet and data analysis | Unclear | Unclear |
| Images, video and voice | ||
| Real-time voice | Unclear | Unclear |
| Image editing and design | ||
| Diagrams from text | Unclear | Unclear |
| Music, voice and transcription | ||
| Dictation into any app | Unclear | Unclear |
| Writing and slides | ||
| Slides from a prompt | Unclear | Unclear |
| Grammar and spelling checks | Yes | Yes |
| Paraphrasing and tone changes | Yes | Yes |
| Projects and memory | ||
| Projects | Unclear | Unclear |
| Custom assistants | Unclear | Unclear |
| Memory across chats | Unclear | Unclear |
| Integrations and agents | ||
| Connectors to other apps | Unclear | Unclear |
| Inside Gmail | Yes | Yes |
| Inside Google Docs | Yes | Yes |
| Inside Google Sheets | Yes | Yes |
| Inside Word | Yes | Yes |
| Inside Excel | Yes | Yes |
| Inside PowerPoint | Yes | Yes |
| Inside Outlook | Yes | Yes |
| Browser agent | Unclear | Unclear |
| Privacy and control | ||
| Opt out of model training | Yes | Yes |
| Export your data | Yes | Yes |
| Shows ads | Unclear | Unclear |
| Rights and licensing | ||
| Commercial use of outputs | Yes | Yes |
| Apps and extras | ||
| Cloud storage included | Unclear | Unclear |
| Apps | Yes | Yes |
| Usage included | Yes | Yes |
The details and sources of every row are in Compare two AIs and the data release.
What it documents for each use
- Research & Search Research a question with sources that hold up · Check claims against reliable sources
- Writing & Content Edit an email without losing a detail · Edit an article without changing its facts · Draft long pieces that stay consistent · Write ads, posts and short copy · Fix grammar and tone in my writing
- Coding & Development Get help with code questions · Diagnose and repair a small program
- Business & Productivity Use AI inside Gmail · Use AI inside Google Docs · Use AI inside Google Sheets · Use AI inside Word · Use AI inside Excel · Use AI inside PowerPoint · Use AI inside Outlook
A use is listed when at least one plan documents every feature a task needs. Answer quality is a separate question: see below.
Using it day to day
Grammarly runs as a web editor with docs, as Windows and Mac apps, as browser extensions for Chrome, Safari, Firefox and Edge, as the Grammarly Keyboard on iPhone and iPad, and as Grammarly for Android. In Word on Windows it shows a floating widget and a Grammarly tab with AI Chat; in Outlook, PowerPoint, OneNote and Excel, suggestions appear one by one in a draggable widget. The Mac Word add-in was discontinued, and Grammarly for Mac has a known PowerPoint issue after a Microsoft update. You can upload a document to the Grammarly Editor for checking and download it again as .docx.
Generative AI features draw on prompts that refill monthly: 100 on Free and 2,000 per member on Pro. AI Chat answers questions, drafts and rewrites in docs and in the desktop apps using those prompts. Grammarly's provider is Superhuman Platform Inc., and Superhuman Go, which can be switched on from Grammarly, holds an agent builder and connectors; which Grammarly plans include them is not stated.
Privacy, data and ads
Grammarly's Product Improvement and Training setting is on by default. Free, Premium and single-user Pro accounts can turn it off in account privacy or data settings to opt out of Grammarly using their content. You can request a personal data report from privacy settings; Grammarly says it is ready within hours and downloads as plain text. Whether any plan shows ads is not verified.
Read the vendor's own page: Grammarly privacy and data controls. We make no legal or compliance claim.
Test results
We have not tested Grammarly yet, so this page makes no claim about answer quality, and we show no example outputs. Run the same kit in it and in the alternatives, in your own account:
- Summarize a report with traceable facts
- Analyze a spreadsheet and get the numbers right
- Edit an email without losing a detail
- Diagnose and repair a small program
- Research a question with sources that support the answer
- Make sense of documents that disagree
- Research a current question within a date window
- Edit an article without changing its facts
- Turn project notes into a report that agrees with itself
- Implement a small specification
- Refactor code without changing what it does
- Make a picture that follows a detailed brief
- Put exact text into a graphic
- Change one thing in a picture and nothing else
- Make a short clip that follows a brief
- Make a song that sings your lyrics exactly
- Read a script with names, numbers and abbreviations
- Design a logo with an exact name
Getting started
- Install the free browser extension or desktop app and write as usual for a week to see whether spelling and grammar checks are enough.
- Turn off Product Improvement and Training in your account's privacy or data settings before you write anything confidential.
- If you want full-sentence rewrites, plagiarism checks or Citation Finder, choose Pro. Compare $30 monthly with $144 a year paid up front, and check the price and tax shown at checkout.
- Keep an eye on AI prompts: 100 a month on Free and 2,000 per member on Pro, refilled monthly.
- Compare Grammarly with QuillBot, Wordtune and other tools on our tools page, and read how we check vendor claims.
Your fit
Tell Find my AI what you do and what matters; it checks every plan of Grammarly against your priorities, next to the alternatives.
Alternatives
- QuillBot QuillBot Premium is listed at $19.95 a month in QuillBot's own blog, with unlimited paraphrasing in 9 built-in modes and 25,000 plagiarism-check words a month, though Premium allows only personal or internal business use. About QuillBot
- Wordtune Wordtune Basic includes unlimited spelling and grammar checks for free, and Advanced, at $13.99 a month before tax, adds 30 rewrites a day and Ask AI. About Wordtune
- Microsoft Copilot Microsoft 365 Personal, at $9.99 a month before tax, includes Microsoft Editor for grammar, spelling, clarity and formality in Word, Outlook and the browser, plus Copilot rewriting in Word. About Microsoft Copilot
Recent changes
- Grammarly Pro added
- Grammarly Free added
Every change is in the change log.
Questions
Is Grammarly free?
Yes. Grammarly Free checks spelling, grammar and punctuation, detects tone and includes 100 generative AI prompts a month. Full-sentence rewrites and plagiarism checks need Pro.
How much does Grammarly Pro cost?
Grammarly's help center lists Pro at $30 a month, $60 every three months, or $144 a year paid up front, which averages $12 a month, per member. Tax depends on your billing address and may be shown separately or included.
What do you get with Grammarly Pro that Free lacks?
Pro adds full-sentence rewrites, tone adjustment, English fluency, unlimited personalized suggestions, plagiarism and AI text detection, Citation Finder and 2,000 AI prompts a month instead of 100.
Does Grammarly use my writing to train AI?
By default it may. The Product Improvement and Training setting is on by default, and Free, Premium and single-user Pro accounts can turn it off in account privacy or data settings.
Who owns text I write with Grammarly?
Grammarly's Terms say the inputs and outputs of its generative AI features are your User Content and that you own all right, title and interest in it. No plan restriction is stated.
Does Grammarly work in Google Docs and Word?
Yes. The browser extension works in Google Docs, Sheets and Forms, and Grammarly for Windows works in Word, Excel, PowerPoint and Outlook. On Mac, the Word add-in was discontinued and Grammarly for Mac is used instead.
Sources
16 official pages, checked Nov 4, 2026. This page was written by the What the tech desk with AI assistance from the facts in our data release; no company paid for or reviewed it.
- AI Chat in Grammarly for Windows and Mac user guideSuperhuman Platform Inc. (Grammarly)
- Citation Finder user guideSuperhuman Platform Inc. (Grammarly)
- Create, upload, and download your documentsSuperhuman Platform Inc. (Grammarly)
- Terms of ServiceSuperhuman Platform Inc. (Grammarly)
- Create and configure agents with the agent builderSuperhuman Platform Inc. (Grammarly)
- About Superhuman Go agents and connectorsSuperhuman Platform Inc. (Grammarly)
- Grammarly browser extensionSuperhuman Platform Inc. (Grammarly)
- Does Grammarly support Google Docs?Superhuman Platform Inc. (Grammarly)
- Known issues on websitesSuperhuman Platform Inc. (Grammarly)
- How to add Grammarly to Microsoft Office on WindowsSuperhuman Platform Inc. (Grammarly)
- Product Improvement and Training ControlSuperhuman Platform Inc. (Grammarly)
- Personal data reportSuperhuman Platform Inc. (Grammarly)
- Grammarly for iPhone user guideSuperhuman Platform Inc. (Grammarly)
- Grammarly Prices and PlansSuperhuman Platform Inc. (Grammarly)
- Paraphraser agent user guideSuperhuman Platform Inc. (Grammarly)
- How much does Grammarly Pro cost?Superhuman Platform Inc. (Grammarly)
About this page
- Published by
- What the tech, Helsinki, Finland
- Author
- What the tech
- Reviewed by
- Peyman Khosravani
- Review scope
- Checked that this page matches the facts in data release 2026.11.07-2: a check against documented sources, not a hands-on test of the product.
- Evidence
- Facts documented by each company, each linked to its official source and dated. Test results appear only where an editor ran the test.
- Data release
- 2026.11.07-2, Nov 7, 2026
Product ownership is separate from publication: What the tech publishes this page; Superhuman Platform Inc. supplies Grammarly. Official Grammarly website. Product names and logos do not imply endorsement of this publication.