Update constant.ts

add Grok 4

Author: dreamsafari

app/constant.ts

@@ -647,26 +647,27 @@ const iflytekModels = [
 const deepseekModels = ["deepseek-chat", "deepseek-coder", "deepseek-reasoner"];
 
 const xAIModes = [
-  "grok-beta",
-  "grok-2",
-  "grok-2-1212",
-  "grok-2-latest",
-  "grok-vision-beta",
-  "grok-2-vision-1212",
-  "grok-2-vision",
-  "grok-2-vision-latest",
-  "grok-3-mini-fast-beta",
-  "grok-3-mini-fast",
-  "grok-3-mini-fast-latest",
-  "grok-3-mini-beta",
+  "grok-4-0709",
+  "grok-4",
+  "grok-4-latest",
+  "grok-3",
+  "grok-3-beta",
+  "grok-3-latest",
   "grok-3-mini",
+  "grok-3-mini-beta",
   "grok-3-mini-latest",
-  "grok-3-fast-beta",
   "grok-3-fast",
+  "grok-3-fast-beta",
   "grok-3-fast-latest",
-  "grok-3-beta",
-  "grok-3",
-  "grok-3-latest",
+  "grok-3-mini-fast",
+  "grok-3-mini-fast-beta",
+  "grok-3-mini-fast-latest",
+  "grok-2-vision-1212",
+  "grok-2-vision",
+  "grok-2-vision-latest",
+  "grok-2-image-1212",
+  "grok-2-image",
+  "grok-2-image-latest",
 ];
 
 const chatglmModels = [