diff --git a/internal/translator/codex/claude/codex_claude_request_test.go b/internal/translator/codex/claude/codex_claude_request_test.go
index 4d4ba4acc..cbe9d0f6d 100644
--- a/internal/translator/codex/claude/codex_claude_request_test.go
+++ b/internal/translator/codex/claude/codex_claude_request_test.go
@@ -792,6 +792,10 @@ func TestConvertClaudeRequestToCodex_AssistantRoutedMetaSignatureToReasoningItem
 }
 
 func TestConvertClaudeRequestToCodex_ResolvesReplayTargetModelOncePerRequest(t *testing.T) {
+	if raceDetectorEnabled {
+		t.Skip("allocation budgets are not meaningful with race detector instrumentation")
+	}
+
 	const thinkingBlocks = 64
 	var body strings.Builder
 	body.WriteString(`{"messages":[{"role":"assistant","content":[`)
diff --git a/internal/translator/codex/claude/race_disabled_test.go b/internal/translator/codex/claude/race_disabled_test.go
new file mode 100644
index 000000000..f72c545a3
--- /dev/null
+++ b/internal/translator/codex/claude/race_disabled_test.go
@@ -0,0 +1,5 @@
+//go:build !race
+
+package claude
+
+const raceDetectorEnabled = false
diff --git a/internal/translator/codex/claude/race_enabled_test.go b/internal/translator/codex/claude/race_enabled_test.go
new file mode 100644
index 000000000..6fe7331c7
--- /dev/null
+++ b/internal/translator/codex/claude/race_enabled_test.go
@@ -0,0 +1,5 @@
+//go:build race
+
+package claude
+
+const raceDetectorEnabled = true