diff --git a/api.py b/api.py
index b44b21b..a9fccac 100644
--- a/api.py
+++ b/api.py
@@ -4,7 +4,7 @@ import shutil
 import urllib.request
 from pathlib import Path
 from tempfile import NamedTemporaryFile
-
+from litellm import completion
 import fitz
 import numpy as np
 import openai
@@ -109,17 +109,19 @@ def load_recommender(path, start_page=1):
 
 
 def generate_text(openAI_key, prompt, engine="text-davinci-003"):
-    openai.api_key = openAI_key
+    # openai.api_key = openAI_key
     try:
-        completions = openai.Completion.create(
-            engine=engine,
-            prompt=prompt,
+        messages=[{ "content": prompt,"role": "user"}]
+        completions = completion(
+            model=engine,
+            messages=messages,
             max_tokens=512,
             n=1,
             stop=None,
             temperature=0.7,
+            api_key=openAI_key
         )
-        message = completions.choices[0].text
+        message = completions['choices'][0]['message']['content']
     except Exception as e:
         message = f'API Error: {str(e)}'
     return message 
diff --git a/requirements.txt b/requirements.txt
index 6e131c8..5b74f23 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,3 +6,4 @@ tensorflow-hub
 openai==0.10.2
 gradio
 langchain-serve>=0.0.19
+litellm