GPTZero is an AI detector website with over 1 million users. It provides accurate AI detection, can be applied to various use cases, and has been validated by multiple independent sources. The website offers pre-filled examples or file upload options to get results. GPTZeroX is a version built specifically for educators and includes plagiarism scoring. The website has a login page where users can sign in with their GPTZero account or Google account.

Originality.AI is a content originality detection tool that supports plagiarism checking and AI content detection, and also provides team management, full-site scanning, and a Chrome extension.

Winston AI is a professional AI content detection tool that can identify text generated by language models such as ChatGPT and GPT-4 with 99.98% accuracy. It supports multilingual detection and can identify rewritten and human-edited AI content.

Copyleaks is an AI-based plagiarism detection tool that can identify and verify original content. It supports more than 100 languages and is suitable for education, publishing, law, and other fields, helping users detect plagiarism in text, code, and images. Through deep learning and natural language processing technologies, Copyleaks can identify semantic similarity and complex forms of plagiarism.

Smodin AI Content Detector is an advanced tool that distinguishes human-written content from AI-generated text. It identifies AI documents with 91% accuracy and human documents with 99% accuracy, helping ensure content authenticity and originality. The tool supports multiple languages, including English and Spanish, and has a user-friendly interface for uploading and scanning documents.

QuillBot is a powerful AI writing assistant that helps users improve writing efficiency and quality through multiple features. Its core feature is text paraphrasing, offering various modes such as standard, fluency, and formal to quickly adjust wording, avoid plagiarism, and increase text diversity. It also includes grammar checking to accurately identify and correct grammar, spelling, and punctuation errors, improving text accuracy.

SpeedAI is an AI research assistant that uses advanced AI technology to help users optimize academic texts, offering intelligent plagiarism reduction, AI-rate reduction, and other features to improve the academic quality and professionalism of articles.