diff --git a/gpt_engineer/ai.py b/gpt_engineer/ai.py
index e5156e97ad..37c85a16b1 100644
--- a/gpt_engineer/ai.py
+++ b/gpt_engineer/ai.py
@@ -151,4 +151,4 @@ def fallback_model(model: str) -> str:
             "to gpt-3.5-turbo. Sign up for the GPT-4 wait list here: "
             "https://openai.com/waitlist/gpt-4-api\n"
         )
-        return "gpt-3.5-turbo"
+        return "gpt-3.5-turbo-16k"