fix(logging): fix rerank token usage in get_usage_as_dict hot path too

get_standard_logging_object_payload() actually calls get_usage_as_dict(),
not get_usage_from_response_obj() - a newer, separate hot-path duplicate
added after the branch's original base. It had the same `usage`-only gap,
so /ui/usage still showed 0 tokens for rerank calls even with the other
fix applied. Same meta.billed_units/meta.tokens fallback applied here.

litellm/litellm_core_utils/litellm_logging.py

@@ -4765,7 +4765,20 @@ class StandardLoggingPayloadSetup:
         if not response_obj:
             return _empty
         _raw: Final = response_obj.get("usage", None)
-        if _raw is None:
+        if not _raw:
+            # RerankResponse has no top-level `usage` field - token usage lives
+            # under `meta.billed_units`/`meta.tokens` instead (Cohere-style API).
+            meta = response_obj.get("meta")
+            if isinstance(meta, dict) and ("billed_units" in meta or "tokens" in meta):
+                billed_units = meta.get("billed_units") or {}
+                tokens = meta.get("tokens") or {}
+                total_tokens = billed_units.get("total_tokens", 0) or 0
+                prompt_tokens = tokens.get("input_tokens", total_tokens) or total_tokens
+                return {
+                    "prompt_tokens": prompt_tokens,
+                    "completion_tokens": 0,
+                    "total_tokens": total_tokens,
+                }
             return _empty
         if isinstance(_raw, ResponseAPIUsage):
             return ResponseAPILoggingUtils._transform_response_api_usage_to_chat_usage(_raw).model_dump()

tests/logging_callback_tests/test_standard_logging_payload.py

@@ -164,6 +164,56 @@ def test_get_usage_from_rerank_response_no_meta():
     assert usage.total_tokens == 0
 
 
+def test_get_usage_as_dict_from_rerank_response():
+    """
+    get_usage_as_dict() is the function actually called by
+    get_standard_logging_object_payload() (the hot path used to build spend
+    logs / /ui/usage). It must handle the rerank `meta.billed_units`/`meta.tokens`
+    shape the same way get_usage_from_response_obj() does, or /ui/usage keeps
+    showing 0 tokens for rerank calls even after fixing the other function.
+    """
+    response_obj = {
+        "id": "rerank-d618748e0f5543e8ba09ee7dd131ac59",
+        "results": [],
+        "meta": {
+            "billed_units": {"total_tokens": 42},
+            "tokens": {"input_tokens": 42},
+        },
+    }
+
+    usage_dict = StandardLoggingPayloadSetup.get_usage_as_dict(response_obj)
+
+    assert usage_dict["prompt_tokens"] == 42
+    assert usage_dict["completion_tokens"] == 0
+    assert usage_dict["total_tokens"] == 42
+
+
+def test_get_usage_as_dict_from_rerank_response_no_meta():
+    response_obj = {"id": "rerank-abc", "results": [], "meta": None}
+
+    usage_dict = StandardLoggingPayloadSetup.get_usage_as_dict(response_obj)
+
+    assert usage_dict["prompt_tokens"] == 0
+    assert usage_dict["completion_tokens"] == 0
+    assert usage_dict["total_tokens"] == 0
+
+
+def test_get_usage_as_dict_from_chat_response():
+    response_obj = {
+        "usage": {
+            "prompt_tokens": 10,
+            "completion_tokens": 20,
+            "total_tokens": 30,
+        }
+    }
+
+    usage_dict = StandardLoggingPayloadSetup.get_usage_as_dict(response_obj)
+
+    assert usage_dict["prompt_tokens"] == 10
+    assert usage_dict["completion_tokens"] == 20
+    assert usage_dict["total_tokens"] == 30
+
+
 def test_get_additional_headers():
     additional_headers = {
         "x-ratelimit-limit-requests": "2000",