OpenAI Releases Open-Source Privacy Filter for Building PII-Aware Web Apps

Summary

OpenAI released an open-source Privacy Filter model (1.5B parameters, 50M active, Apache 2.0) designed for production PII detection in web applications. The model detects eight PII categories — private person, address, email, phone, URL, date, account number, and secret — with a 128,000-token context window that handles full documents in a single forward pass. It achieves state-of-the-art performance on the PII-Masking-300k benchmark and supports multiple languages including Spanish, French, Chi