diff --git a/apps/vibe-coding-platform/ai/constants.ts b/apps/vibe-coding-platform/ai/constants.ts
index f55e25906d..3d4a449cf1 100644
--- a/apps/vibe-coding-platform/ai/constants.ts
+++ b/apps/vibe-coding-platform/ai/constants.ts
@@ -1,6 +1,6 @@
 import { type GatewayModelId } from '@ai-sdk/gateway'
 
-export const DEFAULT_MODEL: GatewayModelId[number] = 'openai/wagyu-a5'
+export const DEFAULT_MODEL: GatewayModelId[number] = 'openai/gpt-5'
 
 export const SUPPORTED_MODELS: GatewayModelId[] = [
   'amazon/nova-pro',
@@ -8,8 +8,8 @@ export const SUPPORTED_MODELS: GatewayModelId[] = [
   'google/gemini-2.5-flash',
   'moonshotai/kimi-k2',
   'openai/gpt-4o',
+  'openai/gpt-5',
   'openai/o4-mini',
-  'openai/wagyu-a5',
   'xai/grok-3-fast',
 ]
 
diff --git a/apps/vibe-coding-platform/ai/gateway.ts b/apps/vibe-coding-platform/ai/gateway.ts
index 1bbdb4cd27..98027178d4 100644
--- a/apps/vibe-coding-platform/ai/gateway.ts
+++ b/apps/vibe-coding-platform/ai/gateway.ts
@@ -7,16 +7,13 @@ const gateway = createGatewayProvider({
 })
 
 interface AvailableModel {
-  id: GatewayModelId | 'openai/wagyu-a5'
+  id: GatewayModelId | 'openai/gpt-5'
   name: string
 }
 
 export async function getAvailableModels(): Promise<AvailableModel[]> {
   const response = await gateway.getAvailableModels()
-  return [
-    ...response.models.map(({ id, name }) => ({ id, name })),
-    { id: 'openai/wagyu-a5', name: 'GPT-5' },
-  ]
+  return [...response.models.map(({ id, name }) => ({ id, name }))]
 }
 
 interface ModelOptions {
@@ -38,7 +35,7 @@ export function getModelOptions(modelId: string): ModelOptions {
     }
   }
 
-  if (modelId === 'openai/wagyu-a5') {
+  if (modelId === 'openai/gpt-5') {
     return {
       model: modelId,
       providerOptions: {