diff --git a/docs/modules/ROOT/pages/which-package.adoc b/docs/modules/ROOT/pages/which-package.adoc
index a3f250d..c3f1a2a 100644
--- a/docs/modules/ROOT/pages/which-package.adoc
+++ b/docs/modules/ROOT/pages/which-package.adoc
@@ -77,7 +77,7 @@ The API is the same. The runtime is not. These are the differences you can plan
 | Faster to build and to query, larger in memory.
 
 | Wheel size
-| Smaller. It carries no Java runtime.
+| Smaller. It carries no Java runtime. The library inside is built with GraalVM Community Edition at `-O3`: about 1.6 times the size of an `-O2` build, for a measured warm speedup over it (geometric mean of the warm timings 0.736 of the `-O2` time).
 | Larger. It carries a Java 25 runtime for its platform.
 
 | Python versions