diff --git a/litellm/litellm_core_utils/litellm_logging.py b/litellm/litellm_core_utils/litellm_logging.py
index 7157f4cb633..81f85e3d5b9 100644
--- a/litellm/litellm_core_utils/litellm_logging.py
+++ b/litellm/litellm_core_utils/litellm_logging.py
@@ -3868,7 +3868,7 @@ def _init_custom_logger_compatible_class(  # noqa: PLR0915
             from litellm.integrations.focus.focus_logger import FocusLogger
 
             for callback in _in_memory_loggers:
-                if isinstance(callback, FocusLogger):
+                if type(callback) is FocusLogger:  # exact match; exclude subclasses like VantageLogger
                     return callback  # type: ignore
             focus_logger = FocusLogger()
             _in_memory_loggers.append(focus_logger)
@@ -4250,7 +4250,7 @@ def get_custom_logger_compatible_class(  # noqa: PLR0915
             from litellm.integrations.focus.focus_logger import FocusLogger
 
             for callback in _in_memory_loggers:
-                if isinstance(callback, FocusLogger):
+                if type(callback) is FocusLogger:  # exact match; exclude subclasses like VantageLogger
                     return callback
         elif logging_integration == "vantage":
             from litellm.integrations.vantage.vantage_logger import VantageLogger