Google's open model, 12B, run locally. In Cover's redaction test, Google Gemma 4 caught 94% of the 149 private details in 18 bank, tax and medical PDFs, leaked 13 and over-redacted 157. Cover caught 100%, leaked 0 and over-redacted 14. Ranked by fewest leaks and over-redactions, Google Gemma 4 places 2nd of 12 engines and Cover places 1st.