OpenAI's open-weight PII model. In Cover's redaction test, OpenAI Privacy Filter caught 64% of the 149 private details in 18 bank, tax and medical PDFs, leaked 53 and over-redacted 709. Cover caught 100%, leaked 0 and over-redacted 14. Ranked by fewest leaks and over-redactions, OpenAI Privacy Filter places 10th of 12 engines and Cover places 1st.