Originality.ai

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.