AI writing assistant for grammar, clarity, and style
Grammarly is an AI-powered writing assistant that checks grammar, spelling, style, and tone.
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Grammarly is an AI-powered writing assistant developed to help individuals and organizations produce clearer, more accurate written communication. It works by analyzing text in real time and surfacing suggestions related to grammar, punctuation, spelling, word choice, sentence structure, and tone. Users can act on suggestions with a single click or review explanations to understand the underlying issue.
The product is designed for a broad audience, including students, professionals, non-native English speakers, and teams that produce written content at scale. It is commonly used for drafting emails, reports, essays, social media posts, and other documents where written accuracy and clarity matter.
Grammarly is available as a browser extension compatible with Chrome, Firefox, Safari, and Edge, as well as desktop applications for Windows and macOS. It also integrates directly with tools such as Microsoft Word, Google Docs, and various email clients, allowing users to receive suggestions within the platforms they already use.
The free plan covers basic grammar and spelling checks. The Premium plan adds suggestions for clarity, engagement, delivery, and style consistency. The Business plan includes team management features, shared style guides, and an admin dashboard, making it suitable for organizations that want to enforce consistent writing standards across employees.
In the writing assistance market, Grammarly competes with tools such as ProWritingAid and Microsoft Editor. Its broad platform support and large user base have made it one of the more widely recognized products in the category. In recent years, the company has expanded its feature set to include generative AI capabilities, such as text drafting and rewriting suggestions.
Offers personalized AI guidance and can generate text suggestions to help overcome writer's block and improve content quality.
Tracks writing performance metrics, productivity statistics, and provides weekly reports on writing goals and improvements.
Enables teams to create shared style guides, maintain consistent brand voice, and collaborate on documents with unified writing standards.
Scans text against billions of web pages and academic papers to identify potential plagiarism and citation issues.
Analyzes text as you type to identify and correct grammar errors, spelling mistakes, and punctuation issues across all writing contexts.
Provides recommendations to improve clarity, conciseness, and writing style while suggesting appropriate tone adjustments for different audiences.
Allows users to set personalized writing goals, choose audience types, and customize feedback based on specific writing intentions and contexts.
Works seamlessly across web browsers and popular websites including Gmail, LinkedIn, Twitter, and Google Docs through browser extensions.
Integrates directly with Microsoft Word, Outlook, and other Office applications to provide writing assistance within familiar workflows.
Provides writing assistance through a custom mobile keyboard app that works across all mobile applications and messaging platforms.
Employs enterprise-grade security measures to protect user documents and ensures that personal writing data remains confidential and encrypted.
Basic writing suggestions for individuals
Advanced writing assistance for individuals
Professional writing assistance for teams
The Grammarly-to-Superhuman rebrand turns a 16-year writing tool into a productivity-platform bet.
“The company changed its corporate name to Superhuman in 2025 after acquiring Coda and Superhuman Mail, anchored by $700M+ ARR at a $13B valuation. The writing tool still ships, but you're now buying into a multi-product agent suite under CEO Shishir Mehrotra.”
The company changed its corporate name from Grammarly to Superhuman in late 2025. That's not a refresh — it's a thesis. Shishir Mehrotra, who came in via the Coda acquisition, now runs a three-product suite where the green underline is the wedge.
$700M+ ARR, 40 million daily users, and $1 billion in non-dilutive financing from General Catalyst at a $13 billion valuation locked in May 2025. Premium at $12 a month and Business at $15 per seat with Brand Tone and SAML SSO put it shoulder-to-shoulder with Microsoft Editor for individuals and ProWritingAid for content teams.
But the rebrand is the risk. You're buying into a roadmap that now includes AI email and a Coda workspace, not just grammar suggestions — and procurement will ask which product is the real bet. Run Business with one department for 90 days before standardizing.
Clear leader in writing assistance with the Brand Tone Business tier, but Microsoft Editor and Google smart-suggestions are now native in the tools enterprises already pay for.
Widely adopted, board-defensible brand with 40M daily users — peers and buyers recognize it on sight.
Browser extension plus Microsoft Word and Google Docs integrations deliver day-one productivity with no rollout project.
The Coda and Superhuman acquisitions broaden scope, but the rebranded multi-product roadmap blurs what you're actually committing to.
16-year company with $700M+ ARR, $13B valuation, and $1B non-dilutive financing from General Catalyst in May 2025.
Teams who write external content under a shared brand voice.
Solo users who only need basic spell-check in a browser.
“Grammarly has become an essential tool for our technical documentation and communications, though enterprise deployment has some rough edges. The AI suggestions genuinely improve our team's written output, but security controls need refinement.”
I've deployed Grammarly across our 200+ person tech organization, and it's transformed how we communicate. Our API documentation, RFCs, and even commit messages are noticeably clearer. The browser extension works seamlessly across our stack - Confluence, GitHub, Slack.
What impressed me most is the consistency of suggestions. Unlike other AI tools we've tested, Grammarly doesn't hallucinate or overcorrect technical terminology. The business tier gives me adequate control over data retention and user management.
My main frustration? Limited API access for custom integrations. We wanted to build grammar checking into our CI/CD pipeline for documentation, but the API is too restrictive. Also, the SSO setup was surprisingly manual for an enterprise product.
Browser extension handles our 200+ concurrent users without performance issues, though the web app occasionally lags.
Regular AI improvements and new features, though enterprise-specific requests move slowly.
Works everywhere we write, but API limitations prevent deeper workflow automation.
SOC 2 compliant but lacks granular controls over which documents get processed - concerning for sensitive technical specs.
Enterprise support team actually understands technical use cases and responds within hours.
Grammarly's home is Superhuman now — the parent rebrand is the real 3-year question for editorial teams.
“Grammarly's October 2025 absorption into the Superhuman rebrand is the strategic question, not whether Brand Tones beat Microsoft Editor. At $12 per seat on the Business plan, the writing substance is solid — but Pro caps at 150 seats and Enterprise is a negotiation.”
Grammarly is now a product inside Superhuman — the parent rebranded in October 2025 after acquiring Coda the prior January. For a Head of Editorial picking a 3-year writing layer, that parent-company shift is the actual decision, not the underline suggestions.
The editorial substance holds. Brand Tones and shared Style Guides on the Business plan at $12 per seat give a comms team real voice control across drafts. Microsoft Editor ships in Word for free, but its tone layer doesn't carry across Slack, browser, and mobile.
But the catch is the 150-seat threshold. Pro tops out there and Enterprise moves to custom pricing — for any comms org past that line, the contract is a negotiation. The 3-year bet works if Superhuman keeps treating writing as core surface, not connective tissue.
Sixteen-year category leader for writing assistance with a durable user base, even as the category itself shifts toward AI agents.
Inline suggestions across Word, Docs, browser, and mobile match exactly how editorial teams actually draft.
Browser extensions, Microsoft Office add-in, Google Docs, Slack, and mobile keyboards make it one of the broadest writing surfaces in the category.
October 2025 Superhuman rebrand and Coda acquisition introduce roadmap uncertainty around how central writing stays in the suite.
Brand Tones and Style Guides give real editorial depth, but the writing-assistant ceiling is being pressured by general-purpose AI.
Comms teams who need shared voice control across drafts.
Solo writers who only need basic grammar correction.
“I've been using Grammarly daily for over a year, and it's become an essential part of my workflow for code comments, documentation, and PR descriptions. While it's not a traditional dev tool, it's surprisingly valuable for maintaining professional communication across my team.”
I initially installed Grammarly to help with blog posts, but it quickly became indispensable for all my technical writing. The browser extension catches embarrassing typos in PR descriptions before my team sees them, and the tone suggestions have genuinely improved how I communicate in code reviews. The VS Code extension works well for README files and inline documentation.
What surprised me most is how much it's improved my technical writing clarity. It catches those awkward phrasings I'd write at 2 AM while debugging production issues. The premium features like tone detection and clarity suggestions are worth it when you're writing API docs or explaining complex architectural decisions to stakeholders.
Their SDK documentation is decent but could use more code examples for edge cases.
Good integrations with dev tools, though the community forums are more writer-focused than developer-focused.
Sometimes unclear why certain suggestions are made, especially for technical terms.
Extensions work seamlessly across VS Code, Chrome, and Slack without getting in the way.
Fast and responsive, never noticed any lag even on large documents.
“Grammarly has become an essential part of my team's content workflow, catching errors we'd miss and maintaining consistent brand voice across all our marketing materials. It's not a marketing platform per se, but as a quality control tool for our content production, it's invaluable.”
I've been using Grammarly Business for our marketing team for about 14 months now, and it's transformed how we produce content. Every blog post, email campaign, and social caption goes through it. What I appreciate most is the brand tone settings - we've configured it to match our voice guidelines, so whether it's me or my content team writing, we maintain consistency.
The real-time suggestions have saved us from embarrassing typos in high-visibility campaigns more times than I can count. The plagiarism checker gives me peace of mind when working with freelancers. My only frustration is the lack of true marketing analytics - I wish it could track how content clarity scores correlate with engagement rates.
It's a writing tool, not a campaign platform - we use it alongside our actual marketing stack.
Responsive team, though most issues are solved through their comprehensive help center.
Seamlessly integrates into our workflow - my team adopted it instantly with zero training needed.
Works everywhere we write - Google Docs, Slack, our CMS, though I wish it integrated with our email platform.
Provides writing statistics but no connection to marketing performance metrics or campaign results.
“After a year of daily use, Grammarly has become essential for our finance team's external communications, though the enterprise pricing model can feel steep for what's essentially a writing assistant.”
I've been using Grammarly Business for our finance team for over a year now, and it's genuinely improved the quality of our reports and investor communications. The real value came when I started seeing fewer revisions on board presentations and cleaner first drafts from my team. What surprised me was how much time we save on proofreading quarterly reports and regulatory filings.
The pricing structure is straightforward but inflexible. We're paying $15 per user monthly, which adds up quickly for our 40-person department. I appreciate that they bill annually upfront with clear invoices, but I've struggled to negotiate volume discounts despite our growing team. The ROI is there - fewer external editing costs and faster document turnaround - but it's hard to quantify precisely for budget discussions.
Clean invoicing, automatic receipts, and they work well with our procurement system.
Annual contracts only, but we can add seats mid-term and get prorated billing which helps.
Pricing tiers are clearly displayed, though enterprise custom pricing required multiple sales calls to understand.
Time savings are real but difficult to translate into concrete dollar amounts for budget justification.
At $7,200 annually for our team, it's expensive for a writing tool, with no volume discounts offered.
Goals make Grammarly more than a spell-checker — but the technical-writing gap shows once you leave standard prose.
“Grammarly's Goals feature shifts suggestions based on audience, formality, tone, and intent — that context is what separates it from Microsoft Editor's built-in checker. The catch is the goals stay shallow on technical writing, and Pro's $12/month annual versus $30 monthly gap punishes anyone hesitant to commit.”
Goals are where Grammarly diverges from a spell-checker. Set audience, formality, tone, and intent per document, and suggestions actually shift — passive voice gets flagged in a board memo but stays quiet in fiction. Microsoft Editor's built-in checker doesn't carry that context across documents.
The browser extension stays out of the way inside Google Docs and Gmail until a yellow underline lands. Grammarly Generative AI sits in a side panel — rewrite, shorten, soften — closer to your draft than ChatGPT's blank-page rewrite. However, suggestion latency drifts past 2 seconds in long Google Docs once you cross ~5,000 words, breaking the inline flow.
Pro is $12/month annual, $30 monthly — the gap punishes anyone testing it. The catch is goals stay shallow on technical writing: an API reference gets flagged for 'unclear' on perfectly good prose. Docs read marketer-clean, not writer-deep — shortcuts buried two clicks down.
Goals carry context across documents and the inline rhythm holds up daily, though latency drifts in long files.
Help docs read marketer-clean; keyboard shortcuts and goal customization buried under tutorial scaffolding.
Yellow underlines stay out of the way, but the Generative AI panel pulls focus more often than needed.
Style guide and tone settings have depth, but technical writing and code-adjacent prose hit the ceiling fast.
Browser extension plus Google Docs, Microsoft Word, and Gmail integrations cover where most writing actually happens.
Writers who draft long-form prose and emails across multiple audiences.
Engineers who write API documentation and technical references.
“Grammarly has become my daily writing companion that catches errors I'd miss even after proofreading. Worth the premium subscription for anyone who writes regularly, though it can be overzealous with suggestions.”
I've been using Grammarly Premium daily for over a year, and it's transformed how I approach writing. The browser extension seamlessly checks everything from emails to social posts, catching not just typos but awkward phrasing and clarity issues. What surprised me most was how it improved my writing over time - I make fewer mistakes now because I've learned from its suggestions.
The tone detection feature has saved me from sending emails that sounded harsher than intended. However, it sometimes flags perfectly good sentences as unclear, especially with technical writing. The mobile keyboard is decent but occasionally laggy. Overall, it's become indispensable - I feel naked writing without that green checkmark.
It just works everywhere I write - browser, desktop app, even my phone.
The keyboard works but feels clunky and drains battery noticeably.
Setup was instant, though understanding all the features took a few weeks.
Usually solid, but occasionally the extension freezes or suggestions take forever to load.
Premium is pricey but pays for itself if you write professionally.
“After 14 months, I finally switched away from Grammarly - the constant upselling, broken integrations, and tone-deaf AI suggestions became too much to bear.”
I was a paying Grammarly user who genuinely relied on it for client communications and proposals. The basic grammar catching worked, but everything else slowly fell apart. The browser extension would randomly stop working mid-email, forcing me to copy-paste into their web app. Their 'tone detection' became increasingly aggressive, flagging normal business language as 'too harsh' while missing actual clarity issues.
The final straw was when they broke Google Docs integration for three weeks straight. Support just kept sending the same troubleshooting steps. Meanwhile, they kept pushing their new AI features I didn't want instead of fixing core functionality. I switched to ProWritingAid and haven't looked back.
ProWritingAid costs less, has better integrations, and actually lets you customize writing rules.
Premium promised 'advanced clarity suggestions' but mostly just reworded sentences to be more verbose.
The Google Docs integration breaking repeatedly made it unusable for my actual workflow.
No way to customize style rules or create team consistency guidelines despite being marketed as a business tool.
Support responses were always friendly but never actually solved the technical issues.
Common questions answered by our AI research team
Grammarly integrates with Microsoft Office (Word, Outlook, PowerPoint) and Google Workspace (Docs, Gmail, Sheets) through browser extensions and desktop apps. The integrations work with most standard document types, though there may be limitations with very large files or complex formatting in some applications.
Grammarly Free offers basic grammar and spelling checks, Premium adds advanced grammar suggestions, tone detection, and plagiarism checking, while Business includes all Premium features plus brand voice consistency, style guides, and team analytics. The Business plan specifically provides brand tone settings and centralized style management for consistent organizational communication.
Grammarly Business includes enterprise-grade security with data encryption, SOC 2 Type II compliance, and SAML single sign-on. They state that user data is not used to train AI models for Business customers, and offer additional privacy controls including the ability to restrict data processing.
Grammarly Business allows centralized deployment through admin dashboards where you can invite users, manage licenses, and control permissions. Administrators can view usage analytics, set organizational policies, and manage team member access without requiring individual account setup by employees.
Grammarly works in Salesforce, Slack, and many other web-based applications through browser extensions, plus supports desktop applications through dedicated apps. The real-time assistance functions across most text input fields in web browsers and integrated applications, though functionality may vary depending on the specific platform's text editor capabilities.
Company
GrammarlyFounded
2009Pricing
From $12/moFree Plan
Available
Grammarly makes AI writing convenient. Work smarter with personalized AI guidance and text generation on any app or website.
