Originality.ai

Our AI Detector is the most accurate tool for identifying text generated by popular AI writing tools, including GPT-5, ChatGPT, Claude 4, Gemini 2.5, and Grok 3.

Prove Your Writing is Your Own

With our free Chrome Extension, you can watch a replay of how a document was created, offering undeniable proof of original authorship. This feature provides a unique way to demonstrate the human origin of your work.

Comprehensive Content Quality Suite

Originality.ai offers more than just AI detection. Our suite includes patented tools for Plagiarism Checking, Fact Checking, and Grammar Checking. We also provide Content Optimization to improve search engine rankings and Readability Checking to ensure clear communication.

Key Features for Writers & Students

• Deep Scan: Understand why text is flagged as AI and learn how to ethically edit it to ensure your work is identified as original.
• AI Checker: The most accurate AI detector for all AI writing tools, available for free.
• Plagiarism Checker: Identify if text has been plagiarized from anywhere on the internet.
• Content Optimizer: AI-powered optimization to help your content rank better.
• Readability Checker: Optimize content for clarity and audience engagement.
• Bulk Scan: Scale content quality assurance and scan entire websites.
• Grammar Checker: Catch grammar and spelling errors before publishing.
• Fact Checker: Verify the factual accuracy of your content.

How to Use Originality.ai

1. Paste or Upload Text: Log in and paste your text, upload a document, or enter a URL.
2. Select Scan Types: Choose from AI detection, plagiarism, content optimization, readability, grammar, or fact-checking.
3. Click Scan: Receive scores and detailed explanations for each scan type, with sentence-level highlighting where applicable.

Proven Accuracy and Security

Originality.ai has been recognized in multiple studies as the most accurate AI detector. Our models are constantly updated to counter the latest AI advancements. We prioritize security and privacy, ensuring your text is encrypted and not used for future AI training without your consent.

Models Tailored to Your Needs

• Lite: For writers and editors who allow light AI editing.
• Academic: Optimized for educational use cases.
• Turbo: For a zero-tolerance policy on AI use.
• Multi Language: Supports over 30 languages for global detection.

Integrations and Support

Seamlessly integrate Originality.ai with Chrome extensions, WordPress plugins, Moodle, and our robust API. We offer flexible pricing and exceptional customer support to meet the needs of individuals, agencies, and educational institutions.