diff --git a/providers/google/provider_options.go b/providers/google/provider_options.go
index fc94264ff6a5e87eb7c31e5216df6c9625dcd730..f05004405110ba5f142c22296455b5261ce4bc6b 100644
--- a/providers/google/provider_options.go
+++ b/providers/google/provider_options.go
@@ -36,6 +36,7 @@ func init() {
 // Mutually exclusive with ThinkingBudget.
 type ThinkingLevel = string
 
+// Predefined thinking levels for the Google provider.
 const (
 	ThinkingLevelLow     ThinkingLevel = "LOW"
 	ThinkingLevelMedium  ThinkingLevel = "MEDIUM"