diff --git a/skema/rest/llm_proxy.py b/skema/rest/llm_proxy.py
index a5082773f7..6e291fed85 100644
--- a/skema/rest/llm_proxy.py
+++ b/skema/rest/llm_proxy.py
@@ -94,7 +94,7 @@ async def get_lines_of_model(zip_file: UploadFile = File()) -> List[Dynamics]:
     # initialize the models
     openai = ChatOpenAI(
         temperature=temperature,
-        model_name='gpt-3.5-turbo-0613',
+        model_name='gpt-3.5-turbo',
         openai_api_key=SKEMA_OPENAI_KEY
     )
 
@@ -181,4 +181,4 @@ async def get_lines_of_model(zip_file: UploadFile = File()) -> List[Dynamics]:
 
 
 app = FastAPI()
-app.include_router(router)
\ No newline at end of file
+app.include_router(router)