Update app.py

app.py

@@ -92,7 +92,7 @@ db = Qdrant(
 )
 
 retriever = db.as_retriever(
-    search_type="similarity",
+    search_type="cosine",
     search_kwargs={"k": 4}
 )
 
@@ -163,7 +163,7 @@ def log_to_qdrant(question: str, answer: str):
 
 llm = ChatOpenAI(
     base_url="https://openrouter.ai/api/v1",
-    model="moonshotai/kimi-k2:free",
+    model="openai/gpt-oss-20b:free",
     api_key=OPENAPI_KEY,# if you prefer to pass api key in directly instaed of using env vars
     temperature=0.1,
     max_tokens=None,