AI Detector Writer

AI Detector Writer is a free online tool designed to analyze written content for traces of artificial intelligence generation. It allows users to paste or upload text—up to 300,000 characters—in plain text, .txt, .md, or .csv formats, and receive a detailed breakdown of which sentences are likely produced by AI models such as GPT-4, GPT-5, or similar language models. The tool operates on a high-precision model trained across multiple languages, ensuring reliable results regardless of the input language. Each sentence flagged as AI-written is highlighted in the output, accompanied by a gauge that visually indicates the estimated proportion of AI contribution within the entire text. This granular feedback helps users identify specific sections that may require human revision or further proofreading. Beyond single-text analysis, the platform supports batch file uploads: multiple files can be uploaded simultaneously, and they are automatically checked in a central dashboard, making it suitable for bulk processing of documents, articles, academic papers, or marketing copy. After analysis, users can generate a free PDF report summarizing the detection results for each file, which can be downloaded and shared for record-keeping or peer review. The tool is intended for a wide range of users: content creators who want to verify originality before publishing, educators who need to check student submissions for unauthorized AI assistance, journalists and editors who must ensure authenticity in their reporting, and researchers who work with large corpora and require automated screening. The interface is straightforward: after landing on the page, users can immediately paste text into a dedicated text area or use the upload button to select files. The system processes the input and