In Cover's redaction test, DeepSeek R1 caught 64% of the 149 private details in 18 bank, tax and medical PDFs, leaked 65 and over-redacted 122. Cover caught 100%, leaked 0 and over-redacted 14. Ranked by fewest leaks and over-redactions, DeepSeek R1 places 6th of 12 engines and Cover places 1st.