Grammerly-AI grammar and proofreading
AI-powered grammar correction for clear writing
A grammar correction assistant focusing on enhancing sentence accuracy.
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Introduction to Grammerly
Grammerly is an AI-powered grammar-correction assistant whose core design purpose is to detect and correct grammatical errors and to explain those corrections in a way that helps users learn. The system focuses strictly on syntax, punctuation, mechanics, and correct word usage rather than offering broad stylistic rewrites unless the user explicitly requests them. Key design goals: accuracy in identifying grammar mistakes, clear micro-explanations tied to each correction, and minimal stylistic interference by default. Example 1 (simple correction + explanation): Input: 'She don't like apples.' Correction: 'She doesn't like apples.' Explanation: 'do' must agree with singular subject 'She' (subject–verb agreement); use 'doesn't' for negative present tense. Example 2 (punctuation that changes meaning): Input: 'Lets eat grandma.' Correction: 'Let's eat, Grandma.' Explanation: Adds apostrophe for contraction and a comma to separate direct address — punctuation changes the sentence meaning entirely. Example 3 (construction and verb form): Input: 'I look forward to meet you.' Correction: 'I look forward to meeting you.' Explanation: After 'look forward to' the verb should be a gerund ('-ing'). Practical scenarios that illustrate purpose: 1)Grammarly introduction details A university student preparing a final essay uses Grammerly to eliminate grammar errors and receive short explanations to avoid repeating the mistakes; 2) An ESL (English-as-a-second-language) user pastes sentences and reads the rule-level feedback (e.g., 'use of gerund vs infinitive') to learn; 3) A professional drafting an external email runs a quick pass to ensure formal mechanics (capitalization, correct prepositions, punctuation) are correct. The assistant returns corrected text plus concise, teachable explanations and — if requested — grouped error summaries (e.g., '3 subject–verb agreement issues, 2 punctuation issues').
Main functions Grammerly offers
Grammar & Syntax Correction
Example
Input: 'They has finished the report.' -> Correction: 'They have finished the report.' Explanation: matches plural subject 'They' with auxiliary 'have' (subject–verb agreement). Also flags tense inconsistencies when they appear across sentences.
Scenario
Use case: A student uploads a paragraph from an essay. Grammerly scans sentences, flags subject–verb agreement, incorrect tense sequences, misplaced modifiers, and incorrect pronoun reference. The student sees the corrected sentence inline and a short rule note (e.g., 'Use plural auxiliary with plural subject'). This reduces obvious grammatical mistakes before submission and helps the student internalize the rule.
Punctuation, Capitalization & Mechanics
Example
Input: 'lets eat grandma.' -> Correction: "Let's eat, Grandma." Explanation: adds apostrophe for contraction and a comma for direct address; capitalizes 'Grandma' only if used as a proper noun (context-sensitive). Also handles serial commas, semicolon usage, quotation punctuation, and capitalization rules.
Scenario
Use case: A business professional composes client-facing emails. Grammerly reviews punctuation and capitalization to prevent meaning changes (commas that change sentences), corrects misuse of colons/semicolons, ensures correct use of apostrophes, and standardizes headings and titles. The result: clearer, mechanically correct communications that reduce misunderstanding.
Error Explanation & Educational Feedback
Example
Input: 'I am interesting in the role.' -> Correction: 'I am interested in the role.' Explanation: 'interesting' is present participle (describes effect on others); 'interested' is past participle/adjective describing a person's state. Rule: use '-ed' adjective to describe someone's feelings or interest.
Scenario
Use case: An ESL learner repeatedly writes 'I am interesting in...' Grammerly not only corrects to 'I am interested in...' but also supplies a concise rule, two additional example sentences ('She is interested in music.' vs 'The lecture was interesting.') and a short practice set (2–3 similar sentences to check understanding). Over time the user reduces repeated errors because each correction is accompanied by an explicit, example-driven explanation.
Ideal users of Grammerly services
Students & Academics
Who: high-school, undergraduate, and graduate students, teaching assistants, and researchers preparing essays, lab reports, theses, or journal drafts. Why they benefit: Grammerly catches mechanical and grammar errors that can lower grades or reader comprehension, provides explanations that support learning (so students don't just accept a fix but understand the rule), and summarizes recurring error types so users can prioritize study. Example benefit: a graduate student polishing a thesis gains confidence that subject–verb agreement, preposition usage, and citation punctuation follow standard English mechanics without Grammerly imposing stylistic rewrites that may conflict with academic voice.
Professionals & Non-native English Speakers
Who: business professionals, grant writers, customer-support agents, marketing copywriters (when they want only mechanical correctness), and non-native English speakers working in professional contexts. Why they benefit: Professionals produce time-sensitive documents (emails, proposals, reports) where mechanical correctness and clarity matter; Grammerly provides quick, focused fixes that reduce embarrassing errors. Non-native speakers especially benefit from clear rule-based explanations (e.g., prepositions, article usage, verb forms) that accelerate skill-building. Example benefit: a non-native project manager preparing a client report uses Grammerly to correct preposition errors and capitalization, and to get a brief rule note, enabling faster, more confident communication.
How to use Grammerly
Visit aichatonline.org for a free trial without login; no ChatGPT Plus required.
Open a modern browser, go to aichatonline.org, and start the free Grammerly trial immediately—no account or ChatGPT Plus needed. Paste text or upload a document to launch checks.
Prepare your text and prerequisites
Have your copy ready (paste or upload common formats such as .docx or .txt). Prerequisites: an internet connection and a modern browser. Optional: create an account to save history and preferences.
Run checks and review suggestions
Click the check/scan button to get grammar, punctuation, spelling, clarity, and word-choice suggestions. Review each suggestion — accept, reject, or view the explanation. Common use cases: emails, essays, reports, social posts, and marketing copy.
Customize settings and integrate
Adjust formality, tone, and rule toggles to preserve voice. Install browser or editor integrations (e.g., Google Docs / Word) for inline corrections. Tip: add domain-specific terms to a customHow to use Grammerly dictionary to reduce false positives.
Export, learn, and iterate
Export corrected text (copy or download) or sync edits back to your editor. Use history and explanation tools to learn recurring errors. Tip: avoid pasting highly sensitive data unless you confirm the privacy settings and data retention policy.
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Common questions about Grammerly
What is Grammerly and what does it do?
Grammerly is an AI-powered grammar and proofreading assistant that detects and corrects grammar, punctuation, spelling, syntax, clarity, and word-choice issues. It also offers tone suggestions and short explanations so you can accept fixes while learning from them.
How do I start using Grammerly and which inputs are supported?
Start by visiting aichatonline.org for a free trial without login (no ChatGPT Plus required). You can paste text into the web editor or upload common file types like .docx and .txt. Browser extensions and editor add-ons enable inline checking in documents and web forms.
How accurate is Grammerly for technical or academic writing?
Grammerly offers strong results for general grammar, punctuation, clarity, and concision. For technical or academic writing, it can catch many surface errors but may not fully respect field-specific conventions or specialized terminology. Use custom dictionaries and review suggestions carefully to preserve domain accuracy.
What about privacy and data security?
Grammerly processes submitted text to generate suggestions; exact handling depends on deployment and settings. If privacy is a priority, avoid pasting extremely sensitive personal, financial, or legal data, and check for local-processing or data-deletion options. Review the service's privacy policy for specifics on retention and usage.
Can I integrate Grammerly into my workflow or use it programmatically?
Yes. Use the web editor for one-off checks, install browser or document editor plugins for inline corrections, and look for API or developer options (if available) to automate checks in apps and content pipelines. Check documentation for integration details, authentication, and rate limits.