AI env vars

src/app/api/chat/route.ts

@@ -5,7 +5,7 @@ export async function POST(req: Request) {
   const { messages }: { messages: UIMessage[] } = await req.json();
 
   const result = streamText({
-    model: openai("gpt-5-mini"),
+    model: openai(process.env.OPENAI_MODEL || "gpt-5-mini"),
     messages: convertToModelMessages(messages),
   });