fix

backend/utils/constants.py

@@ -50,7 +50,7 @@ MODELS = {
             "output_cost_per_million_tokens": 3.00
         },
         "context_window": 200_000,  # 200k tokens
-        "tier_availability": ["free", "paid"]
+        "tier_availability": ["paid"]
     },
     "xai/grok-4": {
         "aliases": ["grok-4", "x-ai/grok-4"],

frontend/src/components/thread/chat-input/_use-model-selection.ts

@@ -45,37 +45,22 @@ export interface CustomModel {
 
 // SINGLE SOURCE OF TRUTH for all model data - aligned with backend constants
 export const MODELS = {
-  // Premium tier models (require subscription)
+  // Premium tier models (require subscription) - using aliases from backend
   'claude-sonnet-4': { 
     tier: 'premium',
     priority: 100, 
     recommended: true,
     lowQuality: false
   },
-
-  // 'gemini-flash-2.5': { 
-  //   tier: 'free', 
-  //   priority: 70,
-  //   recommended: false,
-  //   lowQuality: false
-  // },
-  // 'qwen3': { 
-  //   tier: 'free', 
-  //   priority: 60,
-  //   recommended: false,
-  //   lowQuality: false
-  // },
-
-  // Free tier models (available to all users)
-  'gpt-5-mini': { 
-    tier: 'free', 
-    priority: 100,
-    recommended: true,
+  'gpt-5': { 
+    tier: 'premium', 
+    priority: 99,
+    recommended: false,
     lowQuality: false
   },
-  'moonshotai/kimi-k2': { 
-    tier: 'free', 
-    priority: 90,
+  'google/gemini-2.5-pro': { 
+    tier: 'premium', 
+    priority: 96,
     recommended: false,
     lowQuality: false
   },
@@ -91,37 +76,26 @@ export const MODELS = {
     recommended: false,
     lowQuality: false
   },
-  'google/gemini-2.5-pro': { 
-    tier: 'premium', 
-    priority: 96,
-    recommended: false,
-    lowQuality: false
-  },
   'sonnet-3.5': { 
     tier: 'premium', 
     priority: 90,
     recommended: false,
     lowQuality: false
   },
-  'gpt-5': { 
-    tier: 'premium', 
-    priority: 99,
-    recommended: false,
-    lowQuality: false
-  },
 
-  'gemini-2.5-flash:thinking': { 
-    tier: 'premium', 
-    priority: 84,
+  // Free tier models (available to all users)
+  'gpt-5-mini': { 
+    tier: 'free', 
+    priority: 100,
+    recommended: true,
+    lowQuality: false
+  },
+  'moonshotai/kimi-k2': { 
+    tier: 'premium', // Updated to match backend - this is actually paid tier
+    priority: 85,
     recommended: false,
     lowQuality: false
   },
-  // 'deepseek/deepseek-chat-v3-0324': { 
-  //   tier: 'free', 
-  //   priority: 75,
-  //   recommended: false,
-  //   lowQuality: false
-  // },
 };
 
 // Helper to check if a user can access a model based on subscription status
@@ -214,22 +188,22 @@ export const useModelSelection = () => {
   const MODEL_OPTIONS = useMemo(() => {
     let models = [];
     
-    // Default models if API data not available
-    if (!modelsData?.models || isLoadingModels) {
-      models = [
-        { 
-          id: DEFAULT_FREE_MODEL_ID, 
-          label: 'GPT-5 Mini', 
-          requiresSubscription: false,
-          priority: MODELS[DEFAULT_FREE_MODEL_ID]?.priority || 50
-        },
-        { 
-          id: DEFAULT_PREMIUM_MODEL_ID, 
-          label: 'Sonnet 4', 
-          requiresSubscription: true, 
-          priority: MODELS[DEFAULT_PREMIUM_MODEL_ID]?.priority || 100
-        },
-      ];
+            // Default models if API data not available
+        if (!modelsData?.models || isLoadingModels) {
+          models = [
+            { 
+              id: DEFAULT_FREE_MODEL_ID, 
+              label: 'GPT-5 Mini', 
+              requiresSubscription: false,
+              priority: MODELS[DEFAULT_FREE_MODEL_ID]?.priority || 100
+            },
+            { 
+              id: DEFAULT_PREMIUM_MODEL_ID, 
+              label: 'Claude Sonnet 4', 
+              requiresSubscription: true, 
+              priority: MODELS[DEFAULT_PREMIUM_MODEL_ID]?.priority || 100
+            },
+          ];
     } else {
       // Process API-provided models
       models = modelsData.models.map(model => {