Grammarly
AI-powered writing assistant for improving grammar, tone, clarity, and style across platforms
What is Grammarly?
Grammarly is a widely used AI-enhanced writing assistant originally developed in Ukraine and launched in mid‑2009 by Max Lytvyn, Alex Shevchenko, and Dmytro Lider. Its core functionality includes real‑time grammar, spelling, punctuation, tone, clarity, and style suggestions. Over time, it expanded to browser extensions, desktop and mobile apps, as well as integrations like Google Docs. Since around 2025–2026, Grammarly has progressively incorporated more advanced generative AI capabilities such as essay and content generation, citation assistance, AI‑humanization of text, and predictive grading, reflecting its transition from a corrective tool to a broader writing productivity suite. The company rebranded its parent entity to Superhuman Platform Inc. in late 2025 following acquisitions of Coda (2024) and Superhuman (2025), positioning the product within a larger AI productivity ecosystem.
What you can do with it
Email composition
Professionals polish tone and clarity when drafting empathetic or persuasive emails directly within email apps.
Academic writing
Students check grammar, detect plagiarism, and reformulate sentences to improve essays and research papers.
Content creation
Marketing and content teams streamline rewriting, style consistency, and brand voice across blogs or social media posts.
Team communication governance
Businesses enforce consistent writing standards and manage user access, branding, and security via admin dashboards.
On‑the‑go writing assistance
Users receive real‑time suggestions across messaging platforms, document editors, and browsers.
Key features
- Real‑time grammar, spelling and punctuation correction
- Tone detection and style adjustment suggestions
- Full‑sentence rewrites using generative AI
- Plagiarism detection and AI‑generated text detection
- Generative AI prompts for drafting and rephrasing
- Cross‑platform integration via browser, desktop, and mobile apps
- Enterprise‑grade controls: SSO, admin roles, encryption, analytics
Screenshots
Inputs / Outputs
Strengths & Limitations
Strengths
Wide Platform Support
Available via browser extensions, desktop apps (Windows, macOS), mobile keyboard, and add‑on for Google Docs.
Comprehensive Writing Feedback
Covers grammar, spelling, punctuation, tone, clarity, style, plagiarism detection, and generative rewriting.
Freemium Model
Free tier offers genuinely useful checks; upgrade provides enhanced features like tone adjustment, plagiarism detection, and AI prompts.
Advanced AI Features
Recent inclusion of generative AI for drafting, citations, 'humanizing' text, and other productivity enhancements.
Enterprise‑grade Security
Enterprise tier offers SSO, BYOK encryption, admin controls, and compliance suitable for organizations.
Strong Brand & Adoption
Trusted by tens of millions of individual users and thousands of organizations.
Limitations
Cost of Premium Tiers
Individual Pro tier costing ~$12/month (annual) or ~$30/month (monthly) may be considered expensive by some users.
Feature Lock‑Behind Paywall
Most advanced rewriting, tone, and plagiarism tools are only in paid tiers.
Offline Limitations
Lacks robust offline functionality; primarily dependent on cloud connectivity.
Past Controversies
Certain AI features like “Expert Review” prompted criticism and were discontinued due to legal concerns.
Enterprise Pricing Not Transparent
Enterprise tier pricing is custom and not readily disclosed publicly.
Pricing & Plans
Model: Freemium
Free
Basic grammar, spelling, punctuation, tone detection, limited AI prompts (e.g. 100/month)
Pro
Advanced rewriting, tone adjustments, plagiarism and AI‑text detection, more AI prompts (e.g. up to 2,000/month)
Enterprise
Everything in Pro plus SSO, admin roles, encryption, analytics dashboard, unlimited AI prompts
Free basic grammar/spelling/tone; Pro (formerly Premium) for individuals from $12/month (billed annually) or about $30/month; Business plans from ~$15–25/user/month (annual billing) with team features; Enterprise pricing custom.
Who it's for
Ideal for
Individuals or professionals who regularly write (e.g., students, content creators, business communicators) and value polished writing, tone guidance, and plagiarism checks, and are willing to pay for advanced features.
Not ideal for
Casual or infrequent writers who are satisfied with basic spelling/grammar corrections and don't need AI prompts, stylistic feedback, or plagiarism detection.
What users say
- Ease of use
- Writing confidence
- Cost sensitivity
- Privacy/security
- AI reliance
Prompts & Results
›Write an email declining a meeting invitation politely.
Grammarly would suggest a clear, polite response with appropriate tone adjustments—for example, restructuring to 'Thank you for the invitation. Unfortunately, I must decline due to schedule conflicts…' while ensuring formality and clarity.
›Improve clarity: "The report was submitted by the team yesterday after meeting the deadline."
Grammarly would propose a rewrite such as 'The team submitted the report yesterday, meeting the deadline,' improving conciseness and readability.
›Check for plagiarism in my essay.
In Pro tier, Grammarly would scan the text against billions of web pages and academic content to flag passages that may be unoriginal or improperly cited.
›Generate an outline for an article on remote work productivity.
Grammarly’s generative AI would produce a structured outline with headings and bullet points to guide article composition.
FAQ
What inputs does Grammarly accept?+
Grammarly works with text input via typing or pasting into its apps, browser extensions, or integrated editors (e.g., Google Docs).
What platforms is Grammarly available on?+
It supports web browsers (Chrome, Safari, Firefox), desktop (Windows, macOS), mobile (iOS, Android), and add‑ons for tools like Google Docs.
How is Grammarly priced?+
Grammarly uses a freemium model: free basic tier; Pro from ~$12/month (with annual billing) or ~$30/month; Business ~$15–25/user/month (annual billing); Enterprise is custom.
What generative AI features does Grammarly offer?+
Since around 2025–2026, Grammarly includes features like essay generation from scratch, citations suggestion, AI text ‘humanizer,’ and grading predictions based on institutional inputs.
Is Grammarly secure for enterprise use?+
Yes—Enterprise tier includes features like BYOK encryption, SSO, SAML, admin roles, compliance controls, and SOC 2 adherence.
What happened to the “Expert Review” feature?+
The AI feature attributing feedback to specific experts was discontinued in March 2026 following criticism and a legal complaint.
Ratings & Reviews
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