About This Site
Free online tool to accurately identify AI-generated text and content. Unfox AI is a free online artificial intelligence detector and checker designed to accurately identify AI-generated content from major language models like ChatGPT, Claude, and Gemini. It features a deep learning AI detection engine that analyzes text features like perplexity and burstiness to catch non-human traces, even in rewritten or polished text. The platform provides a sentence-level highlighted report, distinguishing between AI-suspected and human-written content to protect originality, preserve academic integrity, and help users avoid search engine penalties.
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Key Features AI
Core Features
Deep Learning AI Detection Engine analyzing text perplexity and burstiness
Multilingual and multi-model coverage supporting English and Chinese for ChatGPT, Claude, and Gemini
Sentence-Level Highlighted Report showing AI-suspected vs. human-written text
Bulk detection and API integration for large volume processing
Advantages
Free to use with no registration or login required
High accuracy with a stated false positive rate below 0.2%
Provides granular sentence-level color coding feedback
Privacy-first policy where content is discarded immediately after detection
Consistent multilingual support including both English and Chinese
缺点：Exact detail limitations for the free tier tokens are not fully specified
缺点：Detailed pricing tiers for the premium/API version are not visible in the text
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