From 15544283f6a8ed6b14f22a21b8a63a17c4f533c8 Mon Sep 17 00:00:00 2001
From: "devin-ai-integration[bot]"
 <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Mon, 19 Oct 2026 19:56:05 +0000
Subject: [PATCH] fix(logging): keep the catalog model_map_key, report only the
 deployment's own rates

---
 litellm/litellm_core_utils/litellm_logging.py      | 14 ++++++++++++--
 .../litellm_core_utils/test_litellm_logging.py     |  4 ++--
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/litellm/litellm_core_utils/litellm_logging.py b/litellm/litellm_core_utils/litellm_logging.py
index c0cb3dea00b..b16c08e00cc 100644
--- a/litellm/litellm_core_utils/litellm_logging.py
+++ b/litellm/litellm_core_utils/litellm_logging.py
@@ -6371,14 +6371,24 @@ class StandardLoggingPayloadSetup:
             completion_response=init_response_obj,
             base_model=base_model,
             custom_pricing=custom_pricing,
-            router_model_id=router_model_id,
+        )
+        pricing_model_name: Final = (
+            select_model_name_for_cost_calc(
+                model=base_model if custom_pricing else None,
+                completion_response=init_response_obj,
+                base_model=base_model,
+                custom_pricing=custom_pricing,
+                router_model_id=router_model_id,
+            )
+            if router_model_id is not None
+            else model_cost_name
         )
         if model_cost_name is None:
             model_cost_information = StandardLoggingModelInformation(model_map_key="", model_map_value=None)
         else:
             try:
                 _model_cost_information: Final = litellm.get_model_info(
-                    model=model_cost_name,
+                    model=pricing_model_name or model_cost_name,
                     custom_llm_provider=custom_llm_provider,
                     api_base=api_base,
                 )
diff --git a/tests/unit/litellm_core_utils/test_litellm_logging.py b/tests/unit/litellm_core_utils/test_litellm_logging.py
index cf8acd5bd48..35da5a0453b 100644
--- a/tests/unit/litellm_core_utils/test_litellm_logging.py
+++ b/tests/unit/litellm_core_utils/test_litellm_logging.py
@@ -10357,7 +10357,7 @@ def test_uncached_price_leaves_no_pricing_state_on_the_call():
 def test_standard_logging_payload_reports_the_deployment_entry_the_request_was_billed_from(
     input_cost_per_token: float, output_cost_per_token: float
 ):
-    """A deployment with its own price is logged at that price, not at the catalog price of its model."""
+    """A deployment with its own price keeps the catalog model as model_map_key but is logged at its own rates."""
     deployment_id: Final = "lit9660-priced-deployment"
     deployment_model_info: Final = {
         "id": deployment_id,
@@ -10419,7 +10419,7 @@ def test_standard_logging_payload_reports_the_deployment_entry_the_request_was_b
         assert response_cost == 10 * input_cost_per_token + 6 * output_cost_per_token
         assert payload is not None
         assert payload["model_map_information"] == {
-            "model_map_key": f"openai/{deployment_id}",
+            "model_map_key": "openai/gpt-5.4-nano",
             "model_map_value": litellm.get_model_info(model=f"openai/{deployment_id}", custom_llm_provider="openai"),
         }
         model_map_value: Final = payload["model_map_information"]["model_map_value"]