diff --git a/extensions/xai/runtime-model-compat.ts b/extensions/xai/runtime-model-compat.ts
index b44de081398..bb8d1d6535a 100644
--- a/extensions/xai/runtime-model-compat.ts
+++ b/extensions/xai/runtime-model-compat.ts
@@ -3,10 +3,11 @@ import { applyXaiModelCompat } from "openclaw/plugin-sdk/provider-tools";
 type XaiRuntimeModelCompat = {
   compat?: unknown;
   reasoning?: unknown;
-  thinkingLevelMap?: Partial<
-    Record<"off" | "minimal" | "low" | "medium" | "high" | "xhigh", string | null>
-  >;
+  thinkingLevelMap?: XaiThinkingLevelMap;
 };
+type XaiThinkingLevelMap = Partial<
+  Record<"off" | "minimal" | "low" | "medium" | "high" | "xhigh", string | null>
+>;
 
 const XAI_UNSUPPORTED_REASONING_EFFORTS = {
   off: null,
@@ -26,7 +27,9 @@ const XAI_REASONING_EFFORTS = {
   xhigh: "high",
 } satisfies NonNullable<XaiRuntimeModelCompat["thinkingLevelMap"]>;
 
-export function applyXaiRuntimeModelCompat<T extends XaiRuntimeModelCompat>(model: T): T {
+export function applyXaiRuntimeModelCompat<T extends XaiRuntimeModelCompat>(
+  model: T,
+): T & { thinkingLevelMap: XaiThinkingLevelMap } {
   const withCompat = applyXaiModelCompat(model);
   return {
     ...withCompat,