GPT Guard is a product that protects the safety and privacy of ChatGPT conversations using intelligent tokenization technology. It can detect and mask personal privacy information, allowing users to freely use ChatGPT without worrying about leaking sensitive data. The product features include detecting and masking personal privacy information, securely completing AI tasks, privacy protection analysis, and security research. Using GPT Guard can improve work efficiency, reduce workload, while not sacrificing security and privacy.