feat(utils/models): add gpt-4.1-mini and gpt-4.1-nano

and remove support for deprecated gpt-4.5-preview

Author: mikesprague

app/utils/models.ts

@@ -37,16 +37,22 @@ export const models: Models = [
   //   name: 'gpt-4o-mini-web-search',
   // },
   {
-    displayName: 'GPT-4.5 Preview (2025-02-27)',
-    maxInputTokens: 128000,
+    displayName: 'GPT-4.1 (2025-04-14)',
+    maxInputTokens: 1000000,
     maxOutputTokens: 16384,
-    name: 'gpt-45-preview',
+    name: 'gpt-41',
   },
   {
-    displayName: 'GPT-4.1 (2025-04-14)',
+    displayName: 'GPT-4.1 Mini (2025-04-14)',
     maxInputTokens: 1000000,
     maxOutputTokens: 16384,
-    name: 'gpt-41',
+    name: 'gpt-41-mini',
+  },
+  {
+    displayName: 'GPT-4.1 Nano (2025-04-14)',
+    maxInputTokens: 1000000,
+    maxOutputTokens: 16384,
+    name: 'gpt-41-nano',
   },
 ];