diff --git a/run.cc b/run.cc
index 507979d..610b824 100644
--- a/run.cc
+++ b/run.cc
@@ -66,8 +66,8 @@ void ShowConfig(LoaderArgs& loader, InferenceArgs& inference, AppArgs& app) {
               << std::thread::hardware_concurrency() << std::endl
               << "Instruction set               : "
               << hwy::TargetName(hwy::DispatchedTarget()) << " ("
-              << hwy::VectorBytes() * 8 << " bits)"
-              << "\n"
+              << hwy::VectorBytes() * 8 << " bits)" << "\n"
+              << "Compiled config               : " << CompiledConfig() << "\n"
               << "Weight Type                   : "
               << gcpp::TypeName(gcpp::WeightT()) << "\n"
               << "EmbedderInput Type            : "
diff --git a/util/app.h b/util/app.h
index 7f926a5..79956be 100644
--- a/util/app.h
+++ b/util/app.h
@@ -36,6 +36,24 @@
 
 namespace gcpp {
 
+static inline const char* CompiledConfig() {
+  if (HWY_IS_ASAN) {
+    return "asan";
+  } else if (HWY_IS_MSAN) {
+    return "msan";
+  } else if (HWY_IS_TSAN) {
+    return "tsan";
+#if defined(HWY_IS_UBSAN)
+  } else if (HWY_IS_UBSAN) {
+    return "ubsan";
+#endif
+  } else if (HWY_IS_DEBUG_BUILD) {
+    return "dbg";
+  } else {
+    return "opt";
+  }
+}
+
 static inline void PinThreadToCore(size_t cpu_index) {
 #if HWY_OS_LINUX
   // Forces the thread to run on the logical processor with the same number.