diff --git a/php/api.php b/php/api.php
index e1f79d4..9c82565 100644
--- a/php/api.php
+++ b/php/api.php
@@ -4,7 +4,7 @@
 // Set up API key, URL, and model
 $API_KEY = '';
 $url = 'https://api.openai.com/v1/completions';
-$model = "text-davinci-003";
+$model = "gpt-3.5-turbo-instruct";
 $chat = "";
 
 // Read input data