updated app

app.py

@@ -10,7 +10,8 @@ from sentence_transformers import CrossEncoder
 QWEN_MODEL="qwen/qwen3-235b-a22b:free"
 DEEPSEEK_MODEL="deepseek/deepseek-chat-v3.1:free"
 api_key = os.getenv("OPENROUTER_API_KEY")
-client = OpenAI(base_url="https://openrouter.ai/api/v1", api_key=api_key)
+deepseek_key = os.getenv("DEEPSEEK_API_KEY")
+client = OpenAI(base_url="https://openrouter.ai/api/v1", api_key=deepseek_key)
 
 # open ai method
 #api_key = os.getenv("OPENAI_API_KEY")
@@ -18,6 +19,7 @@ client = OpenAI(base_url="https://openrouter.ai/api/v1", api_key=api_key)
 GPT_MODEL="gpt-4o"
 
 
+
 collection = load_collection()
 encoder = load_encoder()
 reranker = CrossEncoder("BAAI/bge-reranker-large")