From ce37729da4c901ff416a768cec3daeb68f0a9cd4 Mon Sep 17 00:00:00 2001
From: Otavio Brito <69211663+otaviofbrito@users.noreply.github.com>
Date: Tue, 20 Jan 2026 14:03:27 -0300
Subject: [PATCH] remove count tokens optional param before request is sent to
 vertex (#19359)

---
 litellm/llms/anthropic/chat/handler.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/litellm/llms/anthropic/chat/handler.py b/litellm/llms/anthropic/chat/handler.py
index 9cc8c24ed1..6a9aafd076 100644
--- a/litellm/llms/anthropic/chat/handler.py
+++ b/litellm/llms/anthropic/chat/handler.py
@@ -317,6 +317,7 @@ class AnthropicChatCompletion(BaseLLM):
         stream = optional_params.pop("stream", None)
         json_mode: bool = optional_params.pop("json_mode", False)
         is_vertex_request: bool = optional_params.pop("is_vertex_request", False)
+        optional_params.pop("vertex_count_tokens_location", None)
         _is_function_call = False
         messages = copy.deepcopy(messages)
         headers = AnthropicConfig().validate_environment(