Detection & evals
Originality.AI
Originality.AI is a content integrity platform designed for writers, editors, educational institutions, and enterprises.
What is Originality.AI?
Originality.AI is a content integrity platform designed for writers, editors, educational institutions, and enterprises.It not only identifies text generated by major LLMs like ChatGPT, Claude, and Gemini but also effectively detects 'adversarial' AI content modified by tools such as Quillbot or Grammarly.
The platform offers a comprehensive suite of tools including AI detection, plagiarism checking, fact-checking, and hallucination detection.Its core strength lies in high accuracy verified by third-party peer-reviewed studies, with support for identifying the latest model versions like GPT-6 Astra, Claude Fable 5, and Gemini 3.
Through Chrome extensions, Google Docs plugins, and Moodle integration, users can receive real-time feedback during the writing process.Additionally, Originality.AI provides API access and MCP integration, allowing developers to embed its detection capabilities into custom applications to ensure content authenticity and originality.
Key features
- High-Precision AAlgorithms verified by third-party studies accurately identify content generated by the latest models like GPT-6, Claude Opus 5.5, and Gemini 4 Argon.
- Adversarial RewrSpecifically trained to detect AI text modified, polished, or rewritten by tools like Quillbot or Grammarly, preventing hidden AI traces.
- Writing Replay FRecords typing processes via the Chrome extension to generate writing replay videos, providing concrete proof of authorship.
- Comprehensive CoIntegrates plagiarism checking, grammar correction, readability analysis, content quality scoring, and guideline compliance checks.
- Fact & HallucinaVerifies the authenticity of facts within the text and detects potential AI hallucinations to ensure information accuracy.
- Seamless Multi-POffers Chrome/Firefox extensions, Google Docs plugins, Moodle plugins, as well as API and MCP interfaces to fit various workflows.
- Enterprise-GradeUses end-to-end military-grade 256-bit encryption, allows opting out of AI training data usage, and enables one-click deletion of scan history.
How to use it
- Visit the official website or install the Chrome/Firefox extension, then sign up and log in to your account.
- Paste text, upload files, or enter URLs in the dashboard, or enable the plugin directly within your document editor.
- Select the desired scan type, such as AI detection, plagiarism check, or content quality score.
- Click the scan button to let the system analyze the text and generate a detailed report.
- Review the results, including AI probability percentages, sentence highlights, and writing replay (if applicable).
- Download the PDF report or share the link to prove content originality to your team or instructors.
Where it fits
- Academic IntegriTeachers and institutions use the Moodle plugin and writing replay feature to verify the originality of student assignments and prevent AI ghostwriting.
- Content MarketinMarketing teams use bulk scanning and fact-checking features to ensure published content is free from plagiarism risks and aligns with brand guidelines.
- Freelancer ProofWriters and translators share detection reports with writing replays to prove to clients that their deliverables are purely human-created.
Pricing and free quota
Pricing and any free quota follow the official site.
Who it is for
- Educators and Students
- Content Marketing Teams
- Freelance Writers and Editors
- Corporate Compliance Departments
- Web Publishers
FAQ
Can Originality.AI detect rewritten AI text?
Yes.The system is specifically trained on 'adversarial data' to detect AI-generated text that has been modified, edited, or rewritten by tools like Quillbot or Grammarly.
How can I prove my article is human-written?
You can use the 'Writing Replay' feature in the Chrome extension.It records your typing process to generate video evidence, providing strong proof of authorship.
Will my data be used to train AI?
No, unless you opt in.Originality.AI allows users to opt out of AI training data usage and provides a one-click feature to delete scan history to protect user privacy.
Which latest AI models are supported for detection?
It supports detection of numerous latest large language models, including GPT-6 (Astra, Sol, Luna), Claude Fable 5, Gemini 3, Kimi K3, DeepSeek V4, and more.