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Updated Oct 5, 2026

AI Content Tools

Grammarly logo

Grammarly

AI writing assistant that checks and rewrites text inside other apps

From $12/mofree trial

Grammarly at a glance

from our research

  1. AI writing assistant that corrects, rewrites and drafts text inside email, document and chat apps

  2. Suggestions appear in place through browser extensions, Mac and Windows apps, and iOS and Android apps

  3. Each AI action spends a prompt; when the month's prompts run out, generative features stop until the refill

  4. Pro: $12 per member a month billed yearly, or $30 per member billed monthly, for teams of up to 149

Overview

What is Grammarly?

Grammarly is an AI writing assistant that catches typos, punctuation and grammar mistakes and commonly confused words, adjusts tone, rewrites whole paragraphs and drafts new text from prompts. The company was founded in 2009 in the United States, and its current Terms name the contracting company as Superhuman Platform Inc., formerly Grammarly, Inc.

There's no separate editor to paste text into. Once the browser extension (Chrome, Safari, Firefox or Edge), the Mac or Windows desktop app or the iOS and Android apps are installed, suggestions appear inside whatever you're writing in: Gmail, Outlook, Google Docs, Word, Slack, Teams, Notion, LinkedIn and many others. Grammarly says it works across more than a million apps and websites. Every generative AI request counts as one prompt, whether you type an instruction or click a ready-made suggestion such as Improve it. For longer pieces there's Docs, a separate writing space, and agents such as Citation Finder, AI Grader and Resume Builder.

Teams can upload a style guide or write custom rules, set brand tones, share snippets of reusable text and follow usage in analytics dashboards. Writing support covers English and 22 other languages, while advanced suggestions and paragraph rewrites work in English, Spanish, French, German, Portuguese and Italian. Developer APIs score writing and check for plagiarism and AI-generated text, though none of them generates text. There's a free plan; Pro is billed per member, monthly, quarterly or yearly, and Enterprise is sold through sales.

Our verdict on Grammarly

Updated Oct 5, 2026Pricing checked Oct 5, 2026

Grammarly's advantage is where it lives. Suggestions show up inside Gmail, Word, Slack, Google Docs and the other places people already type, so a team gets cleaner writing without anyone changing their routine. The free plan handles the basics well enough for an individual: spelling, grammar, punctuation and a read on tone. Pro adds what businesses pay for, which is full-sentence rewrites, tone adjustment, plagiarism and AI-text detection, a shared style guide and brand tone, and team analytics.

As a generator it's narrower than a dedicated AI writer. Grammarly is built to improve text you've written, not to plan and produce a campaign, and every AI action spends a prompt, including clicks on suggestions like Improve it. Pro's 2,000 prompts per member a month leave room for dozens of rewrites a day, but once they're gone, generative features stop until the monthly refill. Pro also includes one style guide and one brand tone, so a company with several brands needs Enterprise. Read the data terms before a rollout. Grammarly's privacy policy says it uses the information it collects to train its AI models, with an opt-out under Product Improvement and Training in account settings, and Grammarly doesn't state that paid accounts are excluded by default.

Pro costs $12 per member a month billed yearly, $60 per member a quarter, or $30 per member billed monthly. Monthly billing therefore costs two and a half times the yearly rate, and payments are non-refundable, partly used periods included. Use the 7-day free trial to decide, then pay yearly. Self-serve Pro covers teams of up to 149 members, with added seats prorated for the rest of the period, and Enterprise is quoted, adding unlimited prompts, style guides and brand tones, BYOK encryption and data loss prevention.

Choose Grammarly when the goal is better everyday writing across a team, in the apps people already use. Jasper is the better fit for producing marketing content at volume from brand voices and knowledge assets, but its Pro plan is a single seat at $69 a month, or $59 a month billed yearly.

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Pros & cons

Grammarly pros and cons

What it does well

  • Free plan checks grammar, spelling and punctuation and includes 100 AI prompts a month
  • Extensions for Chrome, Safari, Firefox and Edge, plus Mac, Windows, iOS and Android apps
  • Pro adds plagiarism and AI-text detection, a shared style guide and team analytics
  • Terms make your inputs and AI outputs your own content, and Grammarly says it doesn't sell them

Where it falls short

  • Payments are non-refundable, including partly used billing periods
  • Pro allows one style guide and one brand tone; more require Enterprise
  • The privacy policy lets Grammarly train its AI on collected data unless you opt out

Editor's assessment from vendor documentation and published pricing

Pricing

Grammarly pricing

Full pricing breakdown

Grammarly's paid plans start at $12/month, right at the $12 median across the 5 tools in our AI Content Tools ranking. A free plan is available, and you can test it on a 7-day free trial.

Free

$0

Free plan

For one person

  • Mistake-free writing checks
  • Writing tone visibility
  • 100 AI prompts a month

Usage: 100 generative AI prompts a month, refilled monthly.

Get started free

Pro

$12/mo

per member, per month

or $30/mo billed monthly

Up to 149 users

  • Full-sentence rewrites
  • Tone adjustments
  • 2,000 AI prompts per member a month
  • Style guides, brand tones, snippets
  • Teams of up to 149 members

Usage: Each member gets 2,000 AI prompts a month, refilled monthly; once they're used up, generative AI is unavailable until the refill. Added seats are billed at the same rates, prorated for the current period, and a quarterly option costs $60 per member per three months.

Visit website

Enterprise

Custom

Tailored pricing for larger teams

  • Unlimited members
  • Unlimited generative AI prompts
  • Dedicated support
  • Confidential mode
  • Granular roles and permissions

Usage: Priced through sales; the page states no member cap and no prompt cap.

Contact sales

Checked against Grammarly, Inc.'s pricing page on October 5, 2026 · see the full breakdown

Capabilities

Grammarly features

Checked against the same feature list as every other tool in its category.

Platform

  • Included:Developer APIProgrammatic generation for embedding in your own products or pipelines.Scoring and detection APIs, not generation
  • Included:SSO & team adminCentral seat management and single sign-on for organisations.SAML SSO on Enterprise

Generation Quality

  • Not included:AI presenters & avatarsGenerates a person on camera delivering your script without filming.
  • Included:Editing & refinementIterates on an existing asset rather than regenerating it from scratch.
  • Included:Long-form generationProduces article-length output that stays coherent from start to finish.
  • Included:Multilingual outputProduces natural output in languages beyond English.
  • Not included:Voice cloningReproduces a specific voice from a recorded sample, with consent controls.

Brand & Control

  • Included:Brand voice trainingLearns your tone and vocabulary from existing material and applies it to every output.Admin-set tone profile and style guide
  • Included:Fine-grained style controlParameters or references that steer output beyond a plain text prompt.
  • Included:Shared team libraryAssets, prompts and brand settings shared across a team rather than per person.
  • Included:Templates & workflowsPrebuilt formats for common deliverables rather than a blank prompt box.

Rights & Licensing

  • Included:Commercial usage rightsPaid plans grant clear rights to use generated output commercially.
  • Not included:IP indemnificationThe vendor defends you against third-party IP claims arising from generated output.
  • Included:Private generationYour prompts and outputs are not visible to other users or published publicly.

Ecosystem

Grammarly integrations

  • Gmail
  • Microsoft Word
  • Google Docs
  • Slack
  • LinkedIn
  • Notion

Videos

Watch Grammarly in action

Product walkthroughs from Grammarly's own YouTube channel.

Alternatives

Top Grammarly alternatives

Tools that do the same job, from the same category.

See all alternatives
Jasper logo

Jasper

Best for in-house marketers producing a steady flow of on-brand content

From $59/mo
ChatGPT logo

ChatGPT

Best for varied work that doesn't live inside one vendor's office apps

Free plan
Claude logo

Claude

Best for reading, writing and analysis that ends in a report, spreadsheet or deck

Free plan

Fit check

Will Grammarly fit your team?

Support

  • Email support
  • Knowledge base

Training

  • Documentation
  • Video tutorials
  • Webinars

Deployment

  • Web
  • Windows
  • macOS
  • iOS
  • Android

Typical users

  • Freelancers
  • Small businesses
  • Mid-size companies
  • Enterprises

FAQs

Grammarly FAQs

Written by our editorial team.

Is Grammarly free?

Yes. The Free plan checks spelling, grammar and punctuation, shows how your tone comes across and includes 100 generative AI prompts a month. Pro adds full-sentence rewrites, tone adjustments, plagiarism and AI-text detection, team style guides and 2,000 prompts per member a month. It costs $12 per member a month billed yearly, or $30 billed monthly, and the US plans page offers a 7-day free trial. See Grammarly pricing for the details.

How do Grammarly's AI prompt limits work?

Every generative AI action uses one prompt: typing a request into the prompt field or clicking a suggestion such as Improve it. Free accounts get 100 prompts a month, Pro gives each member 2,000 a month and Enterprise has no cap. The allowance refills monthly on the date generative AI first became available in your account. If you run out, generative AI features pause until the refill, and Free users see how many days are left along with an option to upgrade.

Does Grammarly use your writing to train its AI?

It can. Grammarly's privacy policy says it uses the information it collects to train its AI models, and you can opt out by turning off Product Improvement and Training in your account settings. Grammarly's Terms make your prompts and the AI's output your own content, and its trust page says it doesn't sell or monetize user and customer content. The Terms also give no warranty that AI output is factually accurate.

Does Grammarly work in Google Docs and Microsoft Word?

Yes. The browser extension for Chrome, Safari, Firefox and Edge brings suggestions into Google Docs, Gmail and other web apps, and the desktop app for Mac and Windows works in Word, Pages, email clients and other desktop programs. Grammarly also runs on iPhone, iPad and Android. Other named apps include Outlook, Slack, Teams, PowerPoint, Apple Mail, Notion, LinkedIn and Figma.

Can you get a refund from Grammarly?

Generally no. Grammarly's Terms say payments are non-refundable and that there are no refunds for partly used periods. Subscriptions renew automatically for the same period at the then-current price. Cancelling stops the next renewal, and you keep paid features until the current period ends. If you subscribed through the App Store, you cancel through Apple. Because of this, the 7-day free trial of Pro is the safer way to judge it.

Sources & methodology

Product details come from Grammarly, Inc.'s public website and documentation (United States). Every plan and price was checked against the vendor's pricing page on October 5, 2026. We haven't tested this product hands-on; the verdict is a desk assessment. How we research and rank tools

  • Founded 2009
  • 1 language supported
  • grammarly.com