In the data-driven world, sensitive information protection is vital for many companies to meet internal and external compliance requirements. With advances in Deep Learning research, AI models are becoming more powerful for tasks like PII Redaction. This article explores how these AI models are used to build Personally Identifiable Information (PII) redaction tools across industries such as call tracking, conversational intelligence, hiring software, and more. It presents five leading APIs for PII Redaction: AssemblyAI, Amazon Transcribe, Super.ai, Azure PII Redaction, and Private AI. Each API has unique features and pricing structures tailored to specific use cases and industries. The article also highlights the wide range of applications where PII Redaction tools can be integrated, including Customer Research Platforms, Hiring Intelligence Platforms, and Call Tracking Solutions.