From e1f53fcc8096500e7bb781f0de81e074226657c4 Mon Sep 17 00:00:00 2001
From: lidongming <lidongming@dhgate.com>
Date: Thu, 15 Aug 2024 16:59:38 +0800
Subject: [PATCH] Fix incorrect message length check in cost calculator

---
 litellm/cost_calculator.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/litellm/cost_calculator.py b/litellm/cost_calculator.py
index 5545b8428..cd8af19f4 100644
--- a/litellm/cost_calculator.py
+++ b/litellm/cost_calculator.py
@@ -624,7 +624,7 @@ def completion_cost(
 
         if custom_llm_provider is not None and custom_llm_provider == "vertex_ai":
             # Calculate the prompt characters + response characters
-            if len("messages") > 0:
+            if len(messages) > 0:
                 prompt_string = litellm.utils.get_formatted_prompt(
                     data={"messages": messages}, call_type="completion"
                 )