diff --git a/llmriddles/llms/chatgpt.py b/llmriddles/llms/chatgpt.py
index e1adbfc..a540792 100644
--- a/llmriddles/llms/chatgpt.py
+++ b/llmriddles/llms/chatgpt.py
@@ -1,20 +1,23 @@
 from functools import lru_cache
 
 from openai import OpenAI
+import os
+_LLM_URL = os.environ.get('QUESTION_LLM_URL', None)
+_LLM_MODEL = os.environ.get('QUESTION_LLM_MODEL', "gpt-3.5-turbo")
 
 from .base import register_llm
 
 
 @lru_cache()
 def _get_openai_client(api_key):
-    return OpenAI(api_key=api_key)
+    return OpenAI(api_key=api_key, base_url=_LLM_URL)
 
 
 def ask_chatgpt(message: str, api_key: str):
     client = _get_openai_client(api_key)
 
     response = client.chat.completions.create(
-        model="gpt-3.5-turbo",
+        model=_LLM_MODEL,
         messages=[
             {"role": "user", "content": message}
         ],