diff --git a/CLAUDE.md b/CLAUDE.md
index ddeeba0..8850fe7 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -96,3 +96,6 @@ BUG=enable_thinking default true -> /no_think ignore -> ramble anglais. FIX: --r
 
 ## Comparatif FR reel (budget0, HTP, pty) 24/05
 9B>4B net: 9B posture psy juste+empathie; 4B inverse role/sentences generiques. Engine OK, FR coherent. Capture: adb direct=pty -> -st marche; script=pas tty. Reco 9B speaker. Thinker bullets + system bref a brancher pour cadrer. JNI = vrai pipeline.
+
+## Empreinte .pte vs engine
+4B: pte 3.3GB/~4.4ION vs engine 2.4GB (-30%). 8/9B: pte8B 5.9GB vs engine9B 5.0GB (-15%). 9B inexistant en pte. GGUF mmap pageable, pte=tout ION 3.5GB/sess. Cascade 9B+Guard4B engine 7.5 vs pte ~10. Engine + leger + flexible.