Grammarly is an AI-based writing assistant that performs grammar, spelling, tone, and clarity check and provides complete sentences' rewrite across various platforms, such as all major browsers, desktop applications, Microsoft Word, and Google Docs. The free plan offers basic proofreading services, while Pro comes with full sentences' rewrites, plagiarism detection, and significantly increased AI prompt limit.
In 2025, the company behind the writing tool Grammarly acquired the email client Superhuman and the productivity tool Coda, and rebranded to Superhuman that October. However, the product itself remains unchanged and still goes under its original name Grammarly — the name change is purely corporate and should be taken into consideration in order not to consider the "Superhuman" reference irrelevant.
Grammarly Free is absolutely free, requires no card to sign up, and includes grammar and spelling corrections, basic tone detection, and generative writing capped at 100 AI prompts per month. For those who proofread their essays or correct errors in their emails, free plan would be sufficient to cover everyday writing needs.
The upgrade to Pro isn't really about better error detection — free already does it quite efficiently. It's about full sentences' and tone rewrites, plagiarism and AI-content detection, unlimited personalized suggestions, and significantly increased prompt limit (roughly 2,000/month vs. 100/month with free). If you don't use rewrite features regularly, the free plan will probably suffice for you.
Pro is priced at $30/month (monthly billing), $20/month (quarterly billing), or about $12/month (annual billing) — quite a difference between the cheapest and the most expensive ways to purchase the very same feature set. There are no differences in features depending on your billing preference; only the cost changes, which means that the monthly billing option is mostly useful for those who prefer to keep no commitments at all.
In some countries outside of the US, Grammarly offers another plan called "Plus" instead of "Pro". It includes all the features of the Pro plan but is not compatible with some of the discounts and not available to those who have (or have had before) Premium, Pro, or Business plans. If you browse the plans and see "Plus" instead of "Pro" — it's exactly the same product.
Now, Pro includes a small selection of collaboration options: up to two user groups, one style guide, one brand tone, snippets, and basic team analytics. These options used to be available in the separate Grammarly Business plan and now are included into the individual Pro plan.
If you purchased the subscription during the promotion or at a discounted rate, Grammarly will auto-renew it once the promotional period expires at the standard rate. It's the single billing detail that often catches users by surprise the most; if you signed up using a coupon or during some discount period, put the auto-renewal date on your calendar.
For teams over 150+ seats, Grammarly offers custom Enterprise pricing including SAML SSO, SCIM provisioning, audit logs, and (for qualifying customers) HIPAA-compliant Business Associate Agreements. None of these are available as add-ons to Pro subscription — they can be obtained only via a negotiated Enterprise contract.
Yes — Grammarly parent company has rebranded itself as Superhuman in October 2025 after acquiring the Superhuman email client and Coda. Grammarly product remains under its original name.
It's actually capable for everyday use — unlimited grammar and spelling corrections, plus 100 AI prompts a month. It becomes limiting only if you require extensive rewrite features or plagiarism detection.
Monthly billing costs about $30/month, quarterly — about $20/month, annual — roughly $12/month. The same features, so the only decision here is how much you are comfortable to pay upfront.
Plus is a regional name for the identical Pro product used in some countries outside of the US. It has the same features but is not compatible with some discounts and not available for those who have (or have had before) Premium, Pro, or Business plans.
No — it will auto-renew at the standard list price. The discounts and promotions are applied only for the first billing term. This is the most frequently reported billing surprise by users.
Yes — a small set: up to two user groups, one style guide, one brand tone, snippets, and basic analytics. These options used to require Business plan but now are included into individual Pro plan.
No — the options like SAML SSO, SCIM, audit logs, and HIPAA Business Associate Agreements are available exclusively in custom Enterprise pricing, typically starting at 150+ seats, and cannot be purchased separately from Pro.
Yes — both in Free and Pro plans. Grammarly integrates with Google Docs through a browser extension and with Microsoft Word through a separate plugin, plus it has native apps for Windows and Mac OS and is integrated in Gmail, Slack, and other text fields across all major browsers.