From 4d6f12578de91a14e5e2377807d5459cea145603 Mon Sep 17 00:00:00 2001
From: sinksilk <785976238@qq.com>
Date: Thu, 1 Oct 2026 22:15:12 +0800
Subject: [PATCH] fix(proxy): count summary tokens without building a new list

Signed-off-by: sinksilk <785976238@qq.com>
---
 .../pass_through/context_management/editors/compact.py          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/litellm/llms/anthropic/pass_through/context_management/editors/compact.py b/litellm/llms/anthropic/pass_through/context_management/editors/compact.py
index 4be645b8f72..81245b4e8b3 100644
--- a/litellm/llms/anthropic/pass_through/context_management/editors/compact.py
+++ b/litellm/llms/anthropic/pass_through/context_management/editors/compact.py
@@ -1046,7 +1046,7 @@ async def _estimate_summary_input_tokens(
     try:
         return await asyncify(litellm.token_counter)(
             model=summary_model,
-            messages=list(summary_messages),
+            messages=summary_messages,
         )
     except Exception as e:
         verbose_logger.warning(