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Writing & SEOSuperhuman

Grammarly

Grammarly is an AI writing assistant made by Superhuman, the company that was called Grammarly until late 2025. It checks spelling, grammar, tone and clarity as you type in browsers, desktop apps and phones. It also offers AI prompts, full-sentence rewrites, plagiarism checks and writing agents for students and professionals.

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Quick facts

VendorSuperhuman
CategoryWriting & SEO
PlatformsWebiOSAndroidmacOSWindowsBrowser extension
Free planYes
Pricing from$30/month
Last reviewed

Best for

  • Students writing essays
  • Professionals writing in English daily
  • Non-native English speakers
  • Teams sharing one writing standard

Key features

Real-time grammar and spelling

Flags spelling, grammar and punctuation errors as you type in email, documents and chat apps, and shows the tone of your writing.

Full-sentence rewrites

Pro rewrites whole sentences for clarity, adjusts tone with a click and offers fluency suggestions for writing in English.

Generative AI prompts

Drafts and reworks text from prompts, with 100 prompts a month on Free and 2,000 per member per month on Pro.

Docs and AI agents

The Docs writing surface, launched in August 2025, adds agents such as AI Grader, Reader Reactions, Citation Finder and Paraphraser.

Plagiarism and AI detection

Pro compares drafts with online sources to catch accidental plagiarism and estimates how much of a text looks AI-generated.

Works across your apps

Extensions for Chrome, Safari, Firefox and Edge plus Windows, Mac, iPhone, iPad and Android apps bring suggestions into most text fields.

Use cases

  • Clean up a sales email or Slack message before sending, using the tone check to catch wording that sounds too blunt.
  • Run a university essay through the plagiarism checker and Citation Finder before uploading it to a course portal.
  • Tighten a wordy report paragraph into shorter sentences without leaving Google Docs or Microsoft Word.

Pricing

Pricing from
$30/month
Free trial

Free costs $0 and includes 100 AI prompts a month. Pro is $30 per member per month, $60 per quarter or $144 per year, with 2,000 prompts. Enterprise is sold through Superhuman Go.

Ways to save

  • Annual billing brings Grammarly Pro to $144 a year, an average of $12 a month instead of $30 on monthly billing.
  • Pro starts with a 7-day free trial, and Grammarly emails a reminder 2 days before the trial ends.
Prices checked on Oct 12, 2026

Current deals

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What is Grammarly?

Grammarly is a writing assistant that sits on top of the apps you already use and suggests fixes for correctness, clarity and tone. It began as a grammar checker and now includes generative AI, sentence rewrites and a set of task-specific writing agents.

In late 2025, the company renamed itself Superhuman after buying the Superhuman email app, and Coda is part of the same company. The product kept the Grammarly name, but Enterprise customers now buy it through Superhuman Go.

What stands out

  • Reach. One account covers browser extensions, Windows and Mac apps, and mobile apps, so the same suggestions follow you everywhere.
  • Published AI limits. Each plan states its monthly prompt limit instead of hiding usage behind credits.
  • Agents for coursework. AI Grader estimates a grade against an uploaded rubric.

Limitations

  • Paying month to month costs 2.5 times the annual average of $12.
  • AI use stops at 100 prompts a month on Free and 2,000 per member on Pro.
  • Plagiarism checks and AI-text detection are Pro features.
  • Confidential mode, data loss prevention and BYOK encryption are Enterprise-only, which matters if you work with sensitive text.

Grammarly FAQ

Yes. The Free plan checks spelling and grammar, shows your writing tone and includes 100 AI prompts a month. Full-sentence rewrites, fluency suggestions, plagiarism checks and AI-text detection need Pro.

Grammarly Pro costs $30 per member per month on monthly billing, $60 every three months, or $144 a year, which averages $12 a month. Grammarly also offers regional pricing in euros, British pounds and Indian rupees.

No, the product is still called Grammarly. In late 2025 the company behind it renamed itself Superhuman, and Grammarly now sits in a suite with Superhuman Mail, Coda and the Superhuman Go assistant.

Yes. Grammarly Pro comes with a 7-day free trial with nothing to pay on the first day, and Grammarly sends an email reminder 2 days before the trial ends so you can cancel in time.

Alternatives to Grammarly

QuillBot

Paraphrasing, grammar checking and AI detection for students and writers.

Wordtune

AI rewriting and summarizing assistant that sharpens your sentences.

DeepL

AI translator and writing assistant known for natural translations.

Originality.ai

AI content detector with plagiarism and fact checking for publishers.

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Sources

Reviewed on Oct 12, 2026

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