From 114090d208aa21ec2c565ff974612ca63f7d127d Mon Sep 17 00:00:00 2001
From: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
Date: Wed, 4 Nov 2026 21:10:42 -0800
Subject: [PATCH] fix: bill regional uplift multipliers float() accepts, bytes
 included

---
 litellm/litellm_core_utils/llm_cost_calc/utils.py         | 6 +++---
 .../llm_cost_calc/test_llm_cost_calc_utils.py             | 8 ++++++++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/litellm/litellm_core_utils/llm_cost_calc/utils.py b/litellm/litellm_core_utils/llm_cost_calc/utils.py
index 0e5218095fa..3fa130fa3bb 100644
--- a/litellm/litellm_core_utils/llm_cost_calc/utils.py
+++ b/litellm/litellm_core_utils/llm_cost_calc/utils.py
@@ -6,10 +6,10 @@ from collections.abc import Mapping, Sequence
 from dataclasses import dataclass, field, replace
 from datetime import datetime, timezone, tzinfo
 from types import MappingProxyType
-from typing import Final, Literal, Protocol, SupportsFloat, TypedDict, cast
+from typing import Final, Literal, Protocol, SupportsFloat, SupportsIndex, TypedDict, cast
 from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
 
-from typing_extensions import ReadOnly
+from typing_extensions import Buffer, ReadOnly
 
 import litellm
 from litellm._internal_context import current_billing_time
@@ -1427,7 +1427,7 @@ def get_regional_uplift_multiplier(model_info: ModelInfo, data_residency: str |
     multiplier: Final = model_info.get(f"regional_processing_uplift_multiplier_{residency}")
     if multiplier is None:
         return 1.0
-    if not isinstance(multiplier, (str, SupportsFloat)):
+    if not isinstance(multiplier, (str, Buffer, SupportsFloat, SupportsIndex)):
         verbose_logger.error(
             "Invalid regional_processing_uplift_multiplier_%s for model; defaulting to 1.0",
             residency,
diff --git a/tests/unit/litellm_core_utils/llm_cost_calc/test_llm_cost_calc_utils.py b/tests/unit/litellm_core_utils/llm_cost_calc/test_llm_cost_calc_utils.py
index 38c6df643b2..609d4a92ade 100644
--- a/tests/unit/litellm_core_utils/llm_cost_calc/test_llm_cost_calc_utils.py
+++ b/tests/unit/litellm_core_utils/llm_cost_calc/test_llm_cost_calc_utils.py
@@ -2790,6 +2790,14 @@ def test_regional_uplift_reads_the_multiplier_named_by_each_residency(model_info
     assert get_regional_uplift_multiplier(model_info, data_residency) == 1.25
 
 
+@pytest.mark.parametrize(
+    "model_info",
+    [{"regional_processing_uplift_multiplier_us": value} for value in (1.25, "1.25", b"1.25", bytearray(b"1.25"))],
+)
+def test_regional_uplift_accepts_every_value_float_converts(model_info: ModelInfo):
+    assert get_regional_uplift_multiplier(model_info, "us") == 1.25
+
+
 @pytest.mark.parametrize(
     "model_info, data_residency",
     [