Grammarly

What is Grammarly?

Writing assistant that checks grammar, spelling, clarity, tone and style in real time across virtually every application, extended with generative AI for drafting, rewriting and replying, plus plagiarism and AI-detection tooling.

Main features

• Real-time grammar, spelling, punctuation and clarity corrections
• tone detection and adjustment
• generative AI prompts for drafting and rewriting
• plagiarism detection
• AI detection
• style guide and brand tones (Business tier)
• snippets and knowledge sharing
• Grammarly Authorship showing how text was produced
• analytics for teams
• works in 500,000+ apps and sites.

Practical use cases

• Catching errors in email and documents before sending
• adjusting tone for a difficult message
• polishing English written by a non-native speaker
• checking a paper for plagiarism
• enforcing a company style guide across teams.

Who is it for?

• Students, professionals, non-native English writers, legal and academic writers, enterprise communications teams.

Pricing, free access & limits

Freemium; per-seat subscription; education and enterprise licensing

Plans described in the source

Free plan with core grammar and spelling. Pro around $12-30/mo depending on billing term (roughly $12/mo billed annually, around $30 monthly). Business around $15-25/user/mo billed annually (3+ seats) adding style guides, brand tones, analytics and SSO. Enterprise and Education quoted separately. Verify - Grammarly has repriced around the Superhuman merger.

Usage limits to consider

Free tier limits advanced suggestions, generative AI prompts and plagiarism checks. Generative AI prompts are metered per month on Pro; Business raises the allowance.

Strengths & tradeoffs

These points summarize the supplied research, rather than hands-on test results.

Strengths noted in the source

• Ubiquity is the product - it works everywhere you write without changing your workflow, which no competitor matches
• correction quality for English is excellent
• Authorship feature addresses a real emerging need around AI-writing disclosure
• strong enterprise style-guide enforcement.

Limitations to consider

• English only, which rules it out for Arabic or French work
• suggestions can be overly prescriptive and flatten distinctive voice
• the AI detector is unreliable and should not drive academic-integrity decisions
• privacy concerns from the keystroke-level access it requires
• monthly pricing is poor value versus annual.

Platforms, languages & integrations

Platforms

• Web, Windows, macOS, iOS, Android, Chrome/Edge/Firefox/Safari extensions, Microsoft Word and Outlook add-ins, Google Docs

Languages

• English only for corrections (US, UK, AU, CA, IN variants); interface in English

API access

Limited - Grammarly for Developers SDK for embedding into applications

Integrations and exports

• Microsoft Word, Outlook, Google Docs, Gmail, Slack, Salesforce, Jira, Confluence, LinkedIn, X, virtually any web text field

Evaluation notes

The AI-detection feature has high false-positive rates on non-native English writing - do not use it for consequential judgements. For a multilingual environment, Grammarly covers only the English portion of the work.

Explore similar tools

Other tools in AI Writing Tools. Compare their specific features and limits for your task.

Frequently asked questions

Sources & editorial notes

Based on the directory editor’s supplied research. The source does not provide a verification date for this row. Importing a record does not independently verify every product claim.

• Official product website
• Official pricing