OpenAI Open-Sources 'Privacy Filter' — a 1.5B Parameter Model That Strips Personal Data From Text
OpenAI has released Privacy Filter under Apache 2.0 — a compact 1.5 billion parameter model that detects and redacts eight categories of PII including names, addresses, phone numbers, and API keys. The model runs locally on a laptop, processes 128K token contexts in a single pass, and is designed as a pre-processing layer before feeding sensitive text to larger AI models.