diff --git a/.env b/.env
index c849bb8..5e014fc 100644
--- a/.env
+++ b/.env
@@ -1,7 +1,7 @@
 # LLM API Configuration
 # Get your API key from https://platform.openai.com/api-keys
 # Or use any OpenAI-compatible API (e.g., Together.ai, Groq, etc.)
-OPENAI_API_KEY=sk-QHX7EZodq0EBuJyRX
+LLM_API_KEY=sk-QHX7EZodq0EBuJyRX
 
 # Optional: Custom base URL for OpenAI-compatible APIs
 LLM_BASE_URL=http://192.168.88.5:8317/v1
diff --git a/.env.example b/.env.example
index 04ae452..53ec8c6 100644
--- a/.env.example
+++ b/.env.example
@@ -1,7 +1,7 @@
 # LLM API Configuration
 # Get your API key from https://platform.openai.com/api-keys
 # Or use any OpenAI-compatible API (e.g., Together.ai, Groq, etc.)
-OPENAI_API_KEY=your_api_key_here
+LLM_API_KEY=your_api_key_here
 
 # Optional: Custom base URL for OpenAI-compatible APIs
 # LLM_BASE_URL=https://api.openai.com/v1
diff --git a/rag_chat.db b/rag_chat.db
index 9276dae..89e36b1 100644
Binary files a/rag_chat.db and b/rag_chat.db differ
diff --git a/web_app.py b/web_app.py
index f3346b6..1f21934 100644
--- a/web_app.py
+++ b/web_app.py
@@ -24,8 +24,8 @@ DATA_DIR = Path(os.environ.get("RAG_DATA_DIR", "."))
 INDEX_DIR = Path(os.environ.get("RAG_INDEX_DIR", "./rag_index"))
 DB_DIR = Path(os.environ.get("RAG_DB_DIR", "."))
 EMBED_MODEL = os.environ.get("RAG_EMBED_MODEL", "sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2")
-LLM_MODEL = os.environ.get("RAG_LLM_MODEL", "gpt-4o-mini")
-LLM_BASE_URL = os.environ.get("RAG_LLM_BASE_URL", "https://api.openai.com/v1")
+LLM_MODEL = os.environ.get("LLM_MODEL", "gpt-4o-mini")
+LLM_BASE_URL = os.environ.get("LLM_BASE_URL", "https://api.openai.com/v1")
 LLM_API_KEY = os.environ.get("OPENAI_API_KEY") or os.environ.get("LLM_API_KEY", "")
 TOP_K = int(os.environ.get("RAG_TOP_K", "5"))
 MAX_HISTORY = int(os.environ.get("RAG_MAX_HISTORY", "10"))