diff --git a/providers/anthropic/provider_options.go b/providers/anthropic/provider_options.go
index 1bff4979ae2b42418b3cadd63006a99a50490867..a429b3ec87253ac659a31e971120a19da8ee6b61 100644
--- a/providers/anthropic/provider_options.go
+++ b/providers/anthropic/provider_options.go
@@ -19,6 +19,8 @@ const (
 	EffortMedium Effort = "medium"
 	// EffortHigh represents high output effort.
 	EffortHigh Effort = "high"
+	// EffortXHigh represents extra-high output effort.
+	EffortXHigh Effort = "xhigh"
 	// EffortMax represents maximum output effort.
 	EffortMax Effort = "max"
 )