AI-powered writing assistant providing real-time grammar checking, tone detection, plagiarism scanning, and generative AI features across 500,000+ apps for professionals, students, and teams.
AI writing assistant with grammar checking, tone detection, plagiarism scanning, and generative AI that integrates with 500,000+ apps to help professionals, students, and teams write clearly and confidently.
Grammarly is the most widely adopted AI writing assistant in 2026, used by over 30 million daily active users and trusted by more than 70,000 teams worldwide. It delivers real-time grammar, spelling, punctuation, and style corrections directly inside the apps where people write — from Gmail and Google Docs to Slack, Notion, and Microsoft Word.
Grammarly's core value is eliminating writing errors and improving clarity without requiring users to leave their workflow. The platform integrates with over 500,000 apps and websites through browser extensions, desktop applications, mobile keyboards, and native plugins for Microsoft Office and Google Workspace. This seamless integration means corrections and suggestions appear inline as users type, with no copy-pasting or context-switching required.
The Pro plan ($12/month billed annually) unlocks advanced features including full-sentence rewrites, tone-aware suggestions, plagiarism detection against 16 billion+ web pages, and 1,000 monthly GrammarlyGO generative AI prompts. GrammarlyGO can draft content, rewrite paragraphs, adjust tone, expand or condense text, and generate contextual replies — all within the user's existing text field. Independent testing shows Grammarly catches 97% of critical grammar errors and provides contextually appropriate suggestions 89% of the time.
For teams, Grammarly Enterprise offers custom style guides, brand voice profiles, centralized admin controls, SAML SSO, and SOC 2 Type II compliance. Organizations report a 30% reduction in editing time and 20% improvement in communication consistency after deploying Grammarly across their workforce.
Grammarly's tone detection engine analyzes text for 40+ tonal qualities including confidence, friendliness, formality, and diplomacy, providing writers with real-time feedback on how their message will be perceived before sending. The 2026 updates have significantly improved multilingual support and expanded GrammarlyGO's capabilities with longer context windows and more nuanced rewrites.
The free tier remains one of the most capable no-cost writing tools available, covering grammar, spelling, punctuation, and basic tone detection without any time limits or word count restrictions. This makes Grammarly accessible to students and casual writers while the Pro and Enterprise tiers serve power users who need advanced features like plagiarism detection, brand voice enforcement, and generative AI assistance.
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Grammarly earns consistent praise for its accuracy, seamless cross-platform integration, and ease of use. Users highlight the tone detection and GrammarlyGO generative AI as standout features in 2026. Common criticisms center on pricing relative to competitors and occasional over-correction of intentional style choices. Enterprise customers report measurable improvements in team writing consistency and reduced editing cycles.
Analyzes text in real time for grammar, punctuation, clarity, conciseness, and engagement using advanced NLP models trained on billions of sentences. Provides contextually aware corrections that go beyond simple rule-based checking to understand intent and audience.
Use Case:
A marketing manager drafts a client proposal and Grammarly rewrites three wordy paragraphs into concise, action-oriented language while catching a subject-verb agreement error that spell-check missed, saving 20 minutes of manual editing.
Embedded generative AI that works directly inside existing applications — can draft new content, rewrite text for different tones, expand bullet points into paragraphs, condense lengthy passages, and generate contextual replies to messages. Pro users get 1,000 prompts monthly.
Use Case:
A customer support manager uses GrammarlyGO to transform a blunt internal note into a empathetic customer-facing response, adjusting tone from direct to diplomatic while preserving all key information in under 10 seconds.
Analyzes writing and provides instant feedback on perceived tone — confidence, friendliness, formality, diplomacy, and 36 other tonal qualities — helping writers ensure their message lands as intended before sending.
Use Case:
A sales director reviewing a follow-up email sees Grammarly flag the tone as 'demanding' rather than the intended 'assertive,' then adjusts three sentences to sound more collaborative, preventing a potential client relationship issue.
Scans text against billions of web pages and academic databases to identify matching or closely paraphrased passages, providing direct source links and percentage overlap scores for transparency and citation accuracy.
Use Case:
A content writer checks a 2,000-word blog post before publication and discovers two sentences closely match an existing article they hadn't seen, allowing them to rewrite or properly attribute the content before publishing.
Enables teams to create custom communication standards that Grammarly enforces automatically across all team members' writing, including preferred terminology, tone requirements, formatting rules, and prohibited language.
Use Case:
A 50-person marketing department creates a Grammarly style guide that flags non-inclusive language, enforces product name capitalization, and ensures the brand's casual-but-professional tone is maintained across all external communications.
$0
$12/month (billed annually) or $30/month
Custom pricing
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In 2026, Grammarly has continued expanding its generative AI capabilities under the GrammarlyGO brand with longer context windows, more natural rewrites, and improved multilingual understanding. The company consolidated its pricing tiers by renaming Premium to Pro and folding Business into Enterprise. New ISO/IEC 42001:2023 responsible AI certification was added. Mobile keyboard performance improved significantly, and the platform expanded its integration ecosystem past 500,000 compatible apps and websites.
Coding Agents
ProWritingAid is a comprehensive writing analysis platform offering 20+ in-depth writing reports covering style, grammar, readability, sentence structure, and overused words. Used by over 2 million writers worldwide, it goes beyond basic grammar checking to provide deep style analysis, genre-specific writing checks, contextual thesaurus suggestions, and readability scoring. Integrates with Microsoft Word, Google Docs, Scrivener, Chrome, and major writing apps.
Automation & Workflows
A writing tool that helps improve readability by highlighting complex sentences, checking grammar, and suggesting simpler alternatives to make writing clearer and more concise.
AI Writing & Content
AI-powered paraphrasing engine with 8 specialized rewriting modes, integrated grammar checker, plagiarism detector, citation generator, and summarization — trusted by 35 million writers to optimize content clarity, improve academic integrity, and create polished professional communications.
Voice Agents
AI writing assistant that helps rewrite, paraphrase, and improve text clarity and tone across emails, documents, and content creation with intelligent suggestions that maintain your unique voice while optimizing for better communication impact.
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