diff --git a/scripts/docs-i18n/main.go b/scripts/docs-i18n/main.go
index 89dd24d281f6..eda48351f51e 100644
--- a/scripts/docs-i18n/main.go
+++ b/scripts/docs-i18n/main.go
@@ -47,7 +47,7 @@ func main() {
 		docsRoot     = flag.String("docs", "docs", "docs root")
 		tmPath       = flag.String("tm", "", "translation memory path")
 		mode         = flag.String("mode", "segment", "translation mode (segment|doc)")
-		thinking     = flag.String("thinking", "high", "thinking level (low|medium|high|xhigh)")
+		thinking     = flag.String("thinking", "xhigh", "thinking level (low|medium|high|xhigh)")
 		overwrite    = flag.Bool("overwrite", false, "overwrite existing translations")
 		allowPartial = flag.Bool("allow-partial", false, "write successful doc-mode outputs even when another file fails")
 		maxFiles     = flag.Int("max", 0, "max files to process (0 = all)")
diff --git a/scripts/docs-i18n/translator.go b/scripts/docs-i18n/translator.go
index b9872575da56..67b56e53e619 100644
--- a/scripts/docs-i18n/translator.go
+++ b/scripts/docs-i18n/translator.go
@@ -349,7 +349,7 @@ func normalizeThinking(value string) string {
 	case "low", "medium", "high", "xhigh":
 		return strings.ToLower(strings.TrimSpace(value))
 	default:
-		return "high"
+		return "xhigh"
 	}
 }
 
diff --git a/scripts/docs-i18n/translator_test.go b/scripts/docs-i18n/translator_test.go
index c45b511090b5..c64e0508dad8 100644
--- a/scripts/docs-i18n/translator_test.go
+++ b/scripts/docs-i18n/translator_test.go
@@ -64,6 +64,12 @@ func TestDocsI18nCommandWaitDelayUsesEnvOverride(t *testing.T) {
 	}
 }
 
+func TestNormalizeThinkingDefaultsToXHigh(t *testing.T) {
+	if got := normalizeThinking(""); got != "xhigh" {
+		t.Fatalf("expected xhigh default, got %q", got)
+	}
+}
+
 func TestIsRetryableTranslateErrorRejectsDeadlineExceeded(t *testing.T) {
 	t.Parallel()
 
diff --git a/scripts/docs-i18n/util.go b/scripts/docs-i18n/util.go
index ecc3ae330be8..214d6cb10515 100644
--- a/scripts/docs-i18n/util.go
+++ b/scripts/docs-i18n/util.go
@@ -15,7 +15,7 @@ const (
 	docsI18nEngineName       = "codex"
 	envDocsI18nProvider      = "OPENCLAW_DOCS_I18N_PROVIDER"
 	envDocsI18nModel         = "OPENCLAW_DOCS_I18N_MODEL"
-	defaultOpenAIModel       = "gpt-5.5"
+	defaultOpenAIModel       = "gpt-5.6"
 	defaultFallbackProvider  = "openai"
 	defaultFallbackModelName = defaultOpenAIModel
 )