What Grammarly does
Grammarly is a writing assistant, now part of Superhuman, that checks grammar and spelling as you type in browsers, desktop apps, Microsoft Office, Google Docs and phones. Beyond corrections it rewrites sentences, adjusts tone, and includes AI agents such as an AI detector, a humanizer and a plagiarism checker. The free plan covers mistakes and tone feedback with 100 AI prompts a month, while Pro adds full rewrites, plagiarism and AI-text detection.
Best for
- Students and professionals proofreading everyday writing
- Non-native English writers aiming for fluent text
- Teams that need a shared style guide and brand tones
- Checking work for plagiarism or AI-written text
Key features
Grammar and spelling
Flags and fixes mistakes in real time across the apps and sites you write in.
Tone feedback
Shows how your writing sounds; Pro can also adjust the tone.
Sentence rewrites
Pro rewrites whole sentences and paragraphs for clarity and fluency.
AI and plagiarism detection
Pro checks text for plagiarism and estimates whether it was AI-generated.
AI agents
Includes tools such as a Humanizer, Citation Generator, Paraphrasing Tool and Translator.
Business controls
Style guides, brand tones, roles and analytics for teams; SSO on Enterprise.
Grammarly pricing
Grammarly has a free plan. Spelling and grammar checks, tone feedback and 100 AI prompts per month. Paid plans start at €12/month. Free trial of Pro, with an email reminder 2 days before it ends (length not stated). Prices were shown in euros when checked from Europe; prices in other regions may differ. Annual pricing was not shown on the plans page. Prices checked on the official site on Nov 9, 2026.
| Free | €0 | |
|---|---|---|
| Pro | €12/month | 2,000 AI prompts per member per month |
| Enterprise | Contact sales |
Source: Grammarly pricing page
Pros and cons
What it does well
- Works in Windows, Mac, all major browsers, Office, Google Docs and mobile keyboards.
- Free plan covers core grammar and spelling without a time limit.
- Pro bundles plagiarism checks and AI-text detection in one subscription.
Know before you sign up
- The free plan is capped at 100 AI prompts per month.
- Tone adjustment, full-sentence rewrites and plagiarism detection need Pro.
- SSO, SCIM and data loss prevention are Enterprise-only.
Alternatives to Grammarly
GPTZeroReview writing for possible AI-generated text.
Hemingway EditorSpot readability issues and revise prose.
QuillBotParaphrase, proofread, and organize writing tasks.
WordtuneRewrite and proofread your text with AI.
Originality.aiScreen text for possible AI generation.
ProWritingAidPlan and edit stories with writer-focused feedback.
Questions about Grammarly
What is Grammarly?
Grammarly is a writing assistant, now part of Superhuman, that checks grammar and spelling as you type in browsers, desktop apps, Microsoft Office, Google Docs and phones. Beyond corrections it rewrites sentences, adjusts tone, and includes AI agents such as an AI detector, a humanizer and a plagiarism checker. The free plan covers mistakes and tone feedback with 100 AI prompts a month, while Pro adds full rewrites, plagiarism and AI-text detection.
Is Grammarly free?
Grammarly has a free plan. Spelling and grammar checks, tone feedback and 100 AI prompts per month. Paid plans start at €12/month. Free trial of Pro, with an email reminder 2 days before it ends (length not stated). Prices were shown in euros when checked from Europe; prices in other regions may differ. Annual pricing was not shown on the plans page. Prices checked on the official site on Nov 9, 2026.
How much does Grammarly cost?
Paid plans start at €12/month; plans listed on the official pricing page: Free (€0), Pro (€12/month), Enterprise (Contact sales). Prices were shown in euros when checked from Europe; prices in other regions may differ. Annual pricing was not shown on the plans page.
Who is Grammarly best for?
Students and professionals proofreading everyday writing, Non-native English writers aiming for fluent text, Teams that need a shared style guide and brand tones and Checking work for plagiarism or AI-written text.
Where can I use Grammarly?
Grammarly is available on Windows, Mac, Chrome extension, iOS and Android, according to its official site.
What are some alternatives to Grammarly?
Similar writing tools include GPTZero, Hemingway Editor, QuillBot and Wordtune. Compare them on the Writing page.