Unfox is an AI detection platform that analyzes text for signs of AI generation, including subtle rewritten or polished content. It supports major models such as ChatGPT, Claude, Gemini, DeepSeek, Grok, Qwen, Kimi, and Doubao, and provides multilingual coverage for English and Chinese. The detector delivers sentence-level reports, a confidence score, bulk upload options, and API access for workflow integration. It is positioned for content verification, academic integrity, editorial review, and website quality control, with a privacy-first approach that does not store submitted content after detection.