====== Grammarly AI ======

Grammarly is an AI-powered writing assistant founded in 2009 that has evolved from a basic grammar checker into a comprehensive communication platform with generative AI capabilities. With over 40 million users and 50,000 organizations, Grammarly provides real-time grammar checking, tone detection, clarity improvements, plagiarism detection, AI content detection, and generative AI writing through its GrammarlyGO feature. ((Source: [[https://www.grammarly.com/plans|Grammarly Plans page]]))

===== History =====

Grammarly was founded in 2009 as a subscription product to help students correct spelling and grammar. ((Source: [[https://techhq.com/news/embargoed-grammarly-goes-big-with-generative-ai-features-in-grammarlygo/|TechHQ GrammarlyGO article]])) Over more than a decade, the company built its reputation on core spelling, grammar, and style guidance delivered through browser extensions, desktop apps, and mobile keyboards. By March 2023, the platform had grown to serve 30 million daily users and over 50,000 teams. ((Source: [[https://www.businesswire.com/news/home/20230309005326/en/Introducing-GrammarlyGO-New-Generative-AI-Product-to-Accelerate-Productivity|BusinessWire GrammarlyGO announcement]]))

===== GrammarlyGO =====

In March 2023, Grammarly launched **GrammarlyGO**, a suite of generative AI writing and editing tools that expanded the platform beyond revision into content conception and composition. ((Source: [[https://voicebot.ai/2023/03/09/grammarly-launches-grammarlygo-suite-of-generative-ai-writing-and-editing-tools/|VoiceBotAI article]])) GrammarlyGO began rolling out in beta in April 2023.

=== AI Model Architecture ===

GrammarlyGO is built on **OpenAI's GPT-3-derived API** for generative capabilities, while Grammarly maintains its own proprietary algorithm for core spelling and grammar corrections. ((Source: [[https://voicebot.ai/2023/03/09/grammarly-launches-grammarlygo-suite-of-generative-ai-writing-and-editing-tools/|VoiceBotAI]])) By 2026, the platform utilizes advanced Large Language Models and context-aware NLP architectures. ((Source: [[https://aitoolsdevpro.com/ai-tools/grammarly-guide/|AI Tools DevPro Grammarly Guide]]))

=== Key Capabilities ===

GrammarlyGO provides the following generative AI features: ((Source: [[https://techhq.com/news/embargoed-grammarly-goes-big-with-generative-ai-features-in-grammarlygo/|TechHQ]]))

  * **Text Composition** - Generate high-quality, tailored drafts from quick prompts directly within any writing context
  * **Email Reply Generation** - Understands email context and offers one-click prompts to draft responses
  * **Ideation** - Generate outlines and ideas to overcome writer's block
  * **Tone Rewriting** - Rewrite entire sections to sound friendlier, more professional, or match a custom tone
  * **Summarization** - Shorten overly long sections automatically
  * **Contextual Prompts** - Proactive suggestions that appear as the user types
  * **Voice Personalization** - Set preferred tones and professional roles for personalized output

===== Tone Detection =====

Grammarly analyzes writing tone across multiple dimensions, detecting whether text sounds confident, friendly, formal, diplomatic, constructive, or other qualities. By Fall 2023, an **automatic voice profile** feature was introduced that describes the unique elements of a user's writing style, allowing one-click rewrites to match that voice. ((Source: [[https://www.grammarly.com/releases-fall-2023|Grammarly Fall 2023 releases]]))

===== Core Writing Features =====

Beyond generative AI, Grammarly provides: ((Source: [[https://popularaitools.ai/grammarly-review/|PopularAITools Grammarly Review]]))

  * **Correctness** - Grammar, spelling, punctuation error detection
  * **Clarity** - Conciseness suggestions, sentence restructuring
  * **Engagement** - Vocabulary enhancement, compelling language suggestions
  * **Delivery** - Tone adjustments to match intent with reader perception
  * **Plagiarism Detection** - Comparison against web sources
  * **AI Content Detection** - Flags potentially AI-generated text
  * **Inclusive Language** - Suggestions for bias-free communication
  * **Citation Consistency** - Ensures formatting standards

===== Enterprise Features =====

Grammarly Business and Enterprise tiers offer: ((Source: [[https://www.grammarly.com/plans|Grammarly Plans]]))

  * **Knowledge Share** - Surfaces internal company acronyms, definitions, and style guides in real-time, functioning as a just-in-time knowledge base ((Source: [[https://aitoolsdevpro.com/ai-tools/grammarly-guide/|AI Tools DevPro]]))
  * **Style Guides and Brand Tones** - Enforce organizational writing standards
  * **Admin Panel and Analytics** - Team usage tracking and management
  * **SAML SSO** - Enterprise single sign-on
  * **Account Roles and Permissions** - Granular access control
  * **SCIM** - Automated user provisioning
  * **Data Loss Prevention** - Security compliance
  * **BYOK Encryption** - Bring your own encryption keys (Enterprise tier)
  * **Unlimited AI Prompts** - Enterprise customers receive unlimited GrammarlyGO prompts ((Source: [[https://www.grammarly.com/releases-fall-2023|Grammarly Fall 2023 releases]]))

===== Integrations =====

Grammarly operates as an overlay across virtually every writing context: ((Source: [[https://popularaitools.ai/grammarly-review/|PopularAITools]]))

  * **Browser Extension** - Chrome, Firefox, Safari, Edge
  * **Desktop Apps** - Windows, macOS
  * **Mobile Keyboard** - iOS, Android
  * **Email** - Gmail, Outlook
  * **Documents** - Google Docs, Microsoft Word
  * **Messaging** - Slack, Microsoft Teams
  * **Development** - VS Code, Jira
  * **Social Media** - LinkedIn, Twitter/X
  * Available through **Superhuman Go** for Enterprise tier

===== Pricing =====

As of 2026, Grammarly offers three tiers: ((Source: [[https://www.grammarly.com/plans|Grammarly official pricing]]))

^ Plan ^ Monthly ^ Annual (per month) ^ AI Prompts ^ Key Features ^
| Free | $0 | $0 | 100/month | Basic grammar, spelling, tone detection, conciseness |
| Pro | $30/mo | $12/mo | 2,000/month | Full grammar/style/clarity, plagiarism detection, AI detection, full-sentence rewrites |
| Enterprise | Contact Sales | Contact Sales | Unlimited | Everything in Pro plus style guides, brand tones, admin panel, SAML SSO, BYOK encryption |

((Source: [[https://www.top50aitools.com/pricing/grammarly|Top 50 AI Tools Grammarly Pricing]]))

===== Academic Integrity Features =====

In late August 2023, Grammarly launched features designed to help professors uphold academic integrity while preparing students for AI-augmented work. These features guide students in leveraging generative AI to augment rather than replace critical thinking. ((Source: [[https://aithority.com/machine-learning/new-grammarlygo-features-empower-students-to-use-generative-ai-responsibly/|AIThority article]]))

===== Limitations =====

  * **English-only** - Grammarly's full feature set is limited to English, which may push multilingual writers to alternative tools ((Source: [[https://popularaitools.ai/grammarly-review/|PopularAITools Review]]))
  * Generative AI outputs still require human review for accuracy
  * Premium features require paid subscription

===== See Also =====

  * [[gptzero|GPTZero]]
  * [[copyleaks|Copyleaks]]
  * [[originality_ai|Originality.ai]]

===== References =====