Grammarly offers a versatile AI-powered writing assistant that adapts to diverse writing formats, from formal academic papers to casual emails, by combining real-time error detection with context-aware suggestions. The platform supports over 40 million users and 50,000 organizations by integrating with common workflows (Microsoft Word, Google Docs, browsers) while maintaining security and privacy standards ^[1][4]. Its capabilities extend beyond basic grammar checks to include tone adjustments, style customization, and even AI-generated content prompts, making it useful for professionals, students, and creative writers alike.

Key capabilities include:

• Format-specific writing styles (Academic, Business, Email, Casual, Creative) with tailored feedback guidelines ^[2]
• Team and organizational tools like shared style guides, brand tone settings, and performance analytics for collaborative writing ^[1][5]
• Multi-language support with British vs. American English options and fluency suggestions for non-native speakers ^[6][9]
• Plagiarism detection and citation formatting (Premium feature) for academic and professional integrity ^[7][9]

Grammarly's Format-Specific Writing Capabilities

Adaptive Writing Styles for Different Contexts

Grammarly Premium provides six distinct writing style presets, each with specialized feedback rules to match the document's purpose and audience. Users select a style before writing, and the tool adjusts its suggestions accordingly—from strict academic conventions to flexible creative prose. The "Academic" style enforces the most formal tone, flagging passive voice, complex phrasing, and informal contractions, while the "Creative" style prioritizes originality over rigid structure ^[2]. This adaptability extends to business communications, where the "Email" preset optimizes for conciseness and professional tone, automatically suggesting more direct phrasing like "Let me know if you have questions" instead of "Please do not hesitate to contact me" ^[2].

For teams, administrators can create custom style guides that override individual preferences, ensuring consistency across organizational documents. These guides can enforce:

• Brand-specific terminology (e.g., "client" vs. "customer") ^[5]
• Tone requirements (e.g., "friendly but authoritative" for customer service teams) ^[1]
• Formatting rules like heading hierarchies or citation styles ^[9]
• Inclusive language preferences to avoid biased phrasing ^[9]

The platform’s AI also anticipates reader expectations by analyzing the selected style. For example, in "Business" mode, it may suggest replacing vague phrases like "a lot of" with precise alternatives ("75% of") while ignoring such suggestions in "Casual" mode ^[2]. Users report this feature reduces proofreading time by 30–50% for format-specific documents like resumes or blog posts ^[6].

Advanced Features for Professional and Creative Writing

Beyond style presets, Grammarly offers tools tailored to specific writing formats through its Premium and Business plans. For academic writing, the plagiarism checker compares text against 16 billion web pages and ProQuest databases, generating similarity reports with source links—a critical feature for students and researchers ^[7][9]. The citation generator supports APA, MLA, and Chicago formats, automatically formatting in-text citations and bibliographies when users input source details ^[8].

• Tone detection that flags inconsistencies (e.g., shifting from formal to conversational mid-document) ^[1][4]
• Full-sentence rewrites for clarity, with options to adjust formality levels ^[9]
• Snippets library for storing reusable text blocks (e.g., email templates or contract clauses) ^[8]
• Readability scores that align with format expectations (e.g., aiming for 60+ for blogs vs. 80+ for technical manuals) ^[8]

Creative writers, however, note limitations in long-form structuring. While Grammarly excels at line-editing novels for grammar and tone, it lacks chapter management or scene-tracking features found in tools like Scrivener ^[7]. Authors primarily use it for:

• Dialogue polishing to ensure character voices remain distinct ^[7]
• Adverb overuse alerts in descriptive passages ^[1]
• Consistency checks for character names/spellings across chapters ^[9]

The platform’s AI assistance (GrammarlyGO) further extends format support by generating drafts based on prompts. For example, inputting "Write a 200-word LinkedIn post about remote work trends" produces a structured draft with industry-appropriate tone, which users can then refine using Grammarly’s style tools ^[4][6]. This feature includes 100 monthly prompts in the free plan and 2,000 in Premium ^[9].