diff --git a/app/core/config.py b/app/core/config.py
index 891e844..78553a0 100644
--- a/app/core/config.py
+++ b/app/core/config.py
@@ -100,7 +100,7 @@ class Settings(BaseSettings):
 
     # LLM provider settings - defaults to Mock service if not configured
     # Options: "openai", "gemini", "mock"
-    LLM_PROVIDER: str = os.environ.get("LLM_PROVIDER", "mock")
+    LLM_PROVIDER: str = os.environ.get("LLM_PROVIDER", "gemini")
     
     # OpenAI settings
     OPENAI_API_KEY: str = os.environ.get("OPENAI_API_KEY", "")