ArabiCheck is a web-based Arabic AI-generated text detection system that uses a fine-tuned AraBERT model to classify Arabic text as human-written or AI-generated. The system was trained on a custom dataset of 67,104 balanced Arabic samples and achieved 99.48% accuracy. It provides sentence-level analysis with confidence scores, sentiment analysis, file upload support with OCR for scanned documents, an AI chatbot powered by Claude, and a bilingual Arabic-English interface.