Grammarly

Grammarly is an AI writing and communication assistant that combines proofreading, rewriting, tone guidance and specialized AI agents. It works across supported apps and browser workflows, while the wider Superhuman product family now includes Go, a proactive assistant, and Docs, a dedicated AI writing surface. The key question is not whether a rewrite sounds smoother, but whether it remains accurate and sounds like the author.

What Grammarly is best suited for

• Professional emails, reports, proposals and business communication
• Improving grammar, spelling, clarity and tone while drafting
• Rewriting paragraphs for a defined audience or purpose
• Reviewing whether a draft is likely to resonate with its intended reader
• Teams that need consistent style guidance and communication controls

Grammarly AI and Superhuman Go

Proofreader: helps strengthen structure, phrasing and correctness. Paraphraser: rewrites text while aiming to preserve the original idea. Reader Reactions: gives feedback from the perspective of a selected audience. Humanizer: aims to make AI-assisted text sound more natural without changing its meaning. Availability may depend on the app, account and plan.

Superhuman Go: Grammarly’s proactive AI assistant is designed to work across supported apps and browser workflows, offering contextual help with drafting, replies, brainstorming and recommendations. Docs: a dedicated writing space for developing and refining longer documents with AI support. Traditional on-demand generative assistance remains available in supported Grammarly extensions and desktop/editor experiences.

A practical workflow: improve a customer email without changing the commitment

1. Write the factual draft first. State the issue, action, owner and deadline in your own words. Do not ask AI to invent a commitment.
2. Choose the reader and tone. Specify whether the message is formal, reassuring, concise or technical.
3. Run a proofreading pass. Correct grammar and spelling, then use a targeted rewrite for unclear sentences.
4. Check the meaning line by line. Confirm that dates, amounts, responsibilities, conditions and promises have not changed.
5. Use reader feedback carefully. Treat audience reactions as suggestions, not as a substitute for knowing the recipient or context.
6. Verify names and source facts. Check people, product names, figures, citations and technical terms independently.
7. Approve the final message yourself. Read it once without the assistant and ensure it remains accurate, appropriate and genuinely yours.

Plans and pricing

The official plans page lists Free at US$0 with 100 AI prompts per month. Pro includes 2,000 AI prompts per member per month, full-sentence rewrites, tone adjustment, plagiarism detection and AI-text detection. The displayed US$12/month Pro rate is the annual-billing average: Grammarly’s support page specifies US$144 per member/year (US$12/month average), US$60 per member every three months, or US$30 per member/month on monthly billing. Enterprise is quote-based and adds organization-level controls and support. Taxes, regional checkout and promotions may affect the final amount.

Pro subscriptions support up to 149 seats according to the current support article. Team/Enterprise feature availability, security controls and admin functions should be checked against the current contract rather than assumed from an individual Pro subscription.

Language support and editorial limits

Grammarly’s strongest proofreading and writing-assistance experience is centered on English. Do not assume that every generative agent or advanced writing feature supports French, Arabic or Darija at the same level. For multilingual publishing, test the exact language, dialect and document type before adopting it as the primary editor. A fluent rewrite can still alter technical meaning, cultural nuance or contractual wording.

Privacy and organizational controls

Because Grammarly works with text entered into supported apps, review the privacy policy, product settings and organization rules before submitting confidential customer details, credentials, internal incidents, unreleased plans or personal information. Enterprise offers additional controls such as custom roles, permissions, data-loss prevention and bring-your-own-key encryption according to the current plans page. These controls are not automatically included in every individual plan.

Limitations and quality checks

• Grammarly is an editorial assistant, not a fact-checker or legal reviewer.
• Rewrites can soften a necessary warning, change a deadline or introduce a commitment that the author did not intend.
• AI-generated-text detection is an estimate and should not be treated as definitive proof of authorship.
• Language quality varies; test the specific language and context you publish in.
• AI prompt quotas and available agents depend on plan, app and rollout; confirm current account access.

Alternatives to compare

Microsoft Editor is worth comparing for writing assistance within Microsoft 365 workflows. LanguageTool offers grammar and style checking across multiple languages. For broader drafting and reasoning, compare a general AI assistant, but keep a separate proofreading and fact-verification step. Test the same paragraph in each tool and compare accuracy, language coverage, privacy, workflow integration and the amount of manual correction required.

AIToolSee evaluation checklist

Use a short, non-confidential email in the language you actually publish. Compare the original and revised text for meaning, tone, factual accuracy and language quality; record how many suggestions you reject; and verify the plan’s prompt allowance and privacy controls. This profile is based on official Grammarly product, pricing and support documentation, not a claim of independent benchmark testing by AIToolSee.

Official resources: Grammarly website · Plans and features · Grammarly AI and agents · Pro pricing and billing options · Generative AI assistance and Superhuman Go.

Explore the AI Tools collection, browse AI Use Cases, or use the AI App Finder. For a focused tutorial, see the Grammarly writing review guide.