From 26ba02d3ce8a82d5260854c2e4fc32a13c70c3c2 Mon Sep 17 00:00:00 2001
From: Mateo Wang <277851410+mateo-berri@users.noreply.github.com>
Date: Thu, 5 Nov 2026 12:20:06 -0800
Subject: [PATCH] perf(bedrock): avoid copying already isolated schema
 definitions (#50240)

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 litellm/litellm_core_utils/prompt_templates/factory.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/litellm/litellm_core_utils/prompt_templates/factory.py b/litellm/litellm_core_utils/prompt_templates/factory.py
index 4c3907dc52f..eda98ae2c67 100644
--- a/litellm/litellm_core_utils/prompt_templates/factory.py
+++ b/litellm/litellm_core_utils/prompt_templates/factory.py
@@ -5879,7 +5879,7 @@ def _bedrock_tools_pt(
             description = name
 
         defs = parameters.pop("$defs", {})
-        defs_copy = copy.deepcopy(defs) if isinstance(defs, dict) else {}
+        defs_copy = defs if isinstance(defs, dict) else {}
         # Expand $ref references in parameters using the definitions
         # Note: We don't pre-flatten defs as that causes exponential memory growth
         # with circular references (see issue #19098). unpack_defs handles nested