# Originality.ai > AI content detector, plagiarism checker, fact checker, and readability analyzer for writers, publishers, and educators. Originality.ai provides the most accurate AI content detection tool on the market, designed for writers, publishers, marketers, educators, and content agencies. The platform detects AI-generated text from GPT-5, ChatGPT, Claude 4, Gemini 2.5, Grok 3, and other popular AI writing tools with 99%+ accuracy. Multiple third-party peer-reviewed studies have validated Originality.ai as the leading AI detector, making it a trusted solution for maintaining content integrity. - **AI Checker** - Detects AI-generated content with industry-leading accuracy across all major LLMs including GPT-5, Claude 4, Gemini 2.5, and DeepSeek V3, with sentence-level highlighting showing probability scores. - **Plagiarism Checker** - Identifies global plagiarism with 99.5% accuracy, surpassing competitors like Copyscape, Grammarly, and Turnitin, with detection for paraphrase and patchwork plagiarism types. - **Fact Checker** - Real-time fact-checking aid that helps avoid AI hallucinations by providing context and source links to verify factual accuracy before publishing. - **Readability Checker** - Optimizes content readability based on modern research of 20,000+ results identifying ideal readability scores for Google ranking. - **Grammar Checker** - AI-powered grammar and spelling checker to catch errors before publishing. - **Deep Scan** - Shows why text is flagged as AI and provides guidance on how to ethically edit content so it is identified as original. - **Bulk Scan** - Scan entire websites to understand AI usage site-wide for content quality assurance at scale. - **Multiple Detection Models** - Choose from Lite (0.5% false positive rate), Academic (optimized for education), Turbo (zero tolerance), and Multilingual (30 languages) models. - **Team Management** - Add, remove, and monitor usage across organization users with Admin, Manager, and User roles. - **API Access** - Full-featured API for integrating AI detection and plagiarism checking into existing workflows at scale. - **Chrome Extension** - Free extension to check content on any website and watch writing replays to prove content originality. - **Shareable Reports** - Generate and share PDF reports showing AI detection and plagiarism results with colleagues and clients. To get started, sign up at app.originality.ai and paste text, upload a PDF, or enter a URL for scanning. Select your desired scan types and click Scan to receive detailed scores with sentence-level highlights. The platform offers flexible pricing with pay-as-you-go credits or monthly subscriptions for individuals and enterprise teams. ## Features - AI content detection for GPT-5, ChatGPT, Claude 4, Gemini 2.5, Grok 3 - Plagiarism checking with 99.5% accuracy - Real-time fact checking - Readability analysis - Grammar and spelling checker - Deep Scan with AI editing guidance - Bulk website scanning - Multiple detection models (Lite, Academic, Turbo, Multilingual) - Sentence-level highlighting - Team management with role assignments - API access for integration - Chrome extension with writing replay - WordPress plugin - Moodle LMS plugin - Shareable and downloadable PDF reports - URL and PDF scanning - 30 language support - 256-bit encryption for data security ## Integrations Google Chrome, WordPress, Moodle LMS, Google Docs, Microsoft Word ## Platforms WEB, API, BROWSER_EXTENSION ## Pricing Freemium — Free tier available with paid upgrades ## Links - Website: https://originality.ai - Documentation: https://docs.originality.ai - EveryDev.ai: https://www.everydev.ai/tools/originality-ai