Update app.py

app.py

@@ -327,33 +327,14 @@ def chat_with_rag(
     # Current user message
     messages.append({"role": "user", "content": user_message})
 
-    # Call GPT-5 with max_completion_tokens, fallback to max_tokens if needed
+    # Call OpenAI GPT-5 using max_completion_tokens
     try:
-        try:
-            resp = client.chat.completions.create(
-                model=CHAT_MODEL,
-                messages=messages,
-                temperature=0.3,
-                max_completion_tokens=900,
-            )
-        except Exception as e1:
-            # If model/SKD doesn't like max_completion_tokens, retry with max_tokens
-            try:
-                resp = client.chat.completions.create(
-                    model=CHAT_MODEL,
-                    messages=messages,
-                    temperature=0.3,
-                    max_tokens=900,
-                )
-            except Exception as e2:
-                answer = f"⚠️ OpenAI API error: {e2}"
-                new_history = history + [
-                    {"role": "user", "content": user_message},
-                    {"role": "assistant", "content": answer},
-                ]
-                debug = debug_retrieval + f"\n\n{e2}"
-                return new_history, new_history, debug
-
+        resp = client.chat.completions.create(
+            model=CHAT_MODEL,
+            messages=messages,
+            temperature=0.3,
+            max_completion_tokens=900,  # correct param for GPT-5
+        )
         answer = resp.choices[0].message.content
     except Exception as e:
         answer = f"⚠️ OpenAI API error: {e}"