diff --git a/litellm/cost_calculator.py b/litellm/cost_calculator.py
index a66a800026..1eb4d0eb94 100644
--- a/litellm/cost_calculator.py
+++ b/litellm/cost_calculator.py
@@ -22,6 +22,7 @@ from litellm.litellm_core_utils.llm_cost_calc.utils import _generic_cost_per_cha
 from litellm.llms.anthropic.cost_calculation import (
     cost_per_token as anthropic_cost_per_token,
 )
+from litellm.rerank_api.types import RerankResponse
 from litellm.types.llms.openai import HttpxBinaryResponseContent
 from litellm.types.router import SPECIAL_MODEL_INFO_PARAMS
 from litellm.types.utils import PassthroughCallTypes, Usage
@@ -93,6 +94,8 @@ def cost_per_token(
         "transcription",
         "aspeech",
         "speech",
+        "rerank",
+        "arerank",
     ] = "completion",
 ) -> Tuple[float, float]:
     """
@@ -487,6 +490,8 @@ def completion_cost(
         "transcription",
         "aspeech",
         "speech",
+        "rerank",
+        "arerank",
     ] = "completion",
     ### REGION ###
     custom_llm_provider=None,
@@ -747,6 +752,7 @@ def response_cost_calculator(
         TranscriptionResponse,
         TextCompletionResponse,
         HttpxBinaryResponseContent,
+        RerankResponse,
     ],
     model: str,
     custom_llm_provider: Optional[str],
@@ -765,6 +771,8 @@ def response_cost_calculator(
         "transcription",
         "aspeech",
         "speech",
+        "rerank",
+        "arerank",
     ],
     optional_params: dict,
     cache_hit: Optional[bool] = None,
@@ -789,6 +797,15 @@ def response_cost_calculator(
                     call_type=call_type,
                     custom_llm_provider=custom_llm_provider,
                 )
+            elif isinstance(response_object, RerankResponse) and (
+                call_type == "arerank" or call_type == "rerank"
+            ):
+                response_cost = rerank_cost(
+                    rerank_response=response_object,
+                    model=model,
+                    call_type=call_type,
+                    custom_llm_provider=custom_llm_provider,
+                )
             else:
                 if custom_pricing is True:  # override defaults if custom pricing is set
                     base_model = model
@@ -820,3 +837,28 @@ def response_cost_calculator(
                 )
             )
         return None
+
+
+def rerank_cost(
+    rerank_response: RerankResponse,
+    model: str,
+    call_type: Literal["rerank", "arerank"],
+    custom_llm_provider: Optional[str],
+) -> float:
+    """
+    Returns
+    - float or None: cost of response OR none if error.
+    """
+    _, custom_llm_provider, _, _ = litellm.get_llm_provider(model=model)
+
+    try:
+        if custom_llm_provider == "cohere":
+            return 0.002
+        raise ValueError(
+            f"invalid custom_llm_provider for rerank model: {model}, custom_llm_provider: {custom_llm_provider}"
+        )
+    except Exception as e:
+        verbose_logger.exception(
+            f"litellm.cost_calculator.py::rerank_cost - Exception occurred - {str(e)}"
+        )
+        raise e
diff --git a/litellm/litellm_core_utils/litellm_logging.py b/litellm/litellm_core_utils/litellm_logging.py
index 7af0a1cade..f57dd3b812 100644
--- a/litellm/litellm_core_utils/litellm_logging.py
+++ b/litellm/litellm_core_utils/litellm_logging.py
@@ -30,6 +30,7 @@ from litellm.integrations.custom_logger import CustomLogger
 from litellm.litellm_core_utils.redact_messages import (
     redact_message_input_output_from_logging,
 )
+from litellm.rerank_api.types import RerankResponse
 from litellm.types.llms.openai import HttpxBinaryResponseContent
 from litellm.types.router import SPECIAL_MODEL_INFO_PARAMS
 from litellm.types.utils import (
@@ -525,6 +526,7 @@ class Logging:
             TranscriptionResponse,
             TextCompletionResponse,
             HttpxBinaryResponseContent,
+            RerankResponse,
         ],
         cache_hit: Optional[bool] = None,
     ):
@@ -588,6 +590,7 @@ class Logging:
                     or isinstance(result, TranscriptionResponse)
                     or isinstance(result, TextCompletionResponse)
                     or isinstance(result, HttpxBinaryResponseContent)  # tts
+                    or isinstance(result, RerankResponse)
                 ):
                     ## RESPONSE COST ##
                     self.model_call_details["response_cost"] = (
diff --git a/litellm/rerank_api/main.py b/litellm/rerank_api/main.py
index 41de82ab66..462208cfcd 100644
--- a/litellm/rerank_api/main.py
+++ b/litellm/rerank_api/main.py
@@ -9,7 +9,7 @@ from litellm.llms.cohere.rerank import CohereRerank
 from litellm.llms.togetherai.rerank import TogetherAIRerank
 from litellm.secret_managers.main import get_secret
 from litellm.types.router import *
-from litellm.utils import supports_httpx_timeout
+from litellm.utils import client, supports_httpx_timeout
 
 from .types import RerankRequest, RerankResponse
 
@@ -20,6 +20,7 @@ together_rerank = TogetherAIRerank()
 #################################################
 
 
+@client
 async def arerank(
     model: str,
     query: str,
@@ -64,6 +65,7 @@ async def arerank(
         raise e
 
 
+@client
 def rerank(
     model: str,
     query: str,
diff --git a/litellm/rerank_api/types.py b/litellm/rerank_api/types.py
index 605e25a2ec..00cb32c180 100644
--- a/litellm/rerank_api/types.py
+++ b/litellm/rerank_api/types.py
@@ -23,3 +23,16 @@ class RerankResponse(BaseModel):
     id: str
     results: List[dict]  # Contains index and relevance_score
     meta: dict  # Contains api_version and billed_units
+    _hidden_params: dict = {}
+
+    class Config:
+        underscore_attrs_are_private = True
+
+    def __getitem__(self, key):
+        return self.__dict__[key]
+
+    def get(self, key, default=None):
+        return self.__dict__.get(key, default)
+
+    def __contains__(self, key):
+        return key in self.__dict__
diff --git a/litellm/tests/test_rerank.py b/litellm/tests/test_rerank.py
index 4e70424bc3..4d0fdfb344 100644
--- a/litellm/tests/test_rerank.py
+++ b/litellm/tests/test_rerank.py
@@ -1,3 +1,4 @@
+import asyncio
 import json
 import os
 import sys
@@ -20,6 +21,7 @@ import pytest
 
 import litellm
 from litellm import RateLimitError, Timeout, completion, completion_cost, embedding
+from litellm.integrations.custom_logger import CustomLogger
 from litellm.llms.custom_httpx.http_handler import AsyncHTTPHandler, HTTPHandler
 
 
@@ -177,3 +179,37 @@ async def test_rerank_custom_api_base():
         assert response.results is not None
 
         assert_response_shape(response, custom_llm_provider="cohere")
+
+
+class TestLogger(CustomLogger):
+
+    def __init__(self):
+        self.kwargs = None
+        self.response_obj = None
+        super().__init__()
+
+    async def async_log_success_event(self, kwargs, response_obj, start_time, end_time):
+        print("in success event for rerank, kwargs = ", kwargs)
+        print("in success event for rerank, response_obj = ", response_obj)
+        self.kwargs = kwargs
+        self.response_obj = response_obj
+
+
+@pytest.mark.asyncio()
+async def test_rerank_custom_callbacks():
+    custom_logger = TestLogger()
+    litellm.callbacks = [custom_logger]
+    response = await litellm.arerank(
+        model="cohere/rerank-english-v3.0",
+        query="hello",
+        documents=["hello", "world"],
+        top_n=3,
+    )
+
+    await asyncio.sleep(5)
+
+    print("async re rank response: ", response)
+    assert custom_logger.kwargs is not None
+    assert custom_logger.kwargs.get("response_cost") > 0.0
+    assert custom_logger.response_obj is not None
+    assert custom_logger.response_obj.results is not None
diff --git a/litellm/utils.py b/litellm/utils.py
index d8aa51bd51..6b7b94a70c 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -745,6 +745,7 @@ def client(original_function):
             or kwargs.get("amoderation", False) == True
             or kwargs.get("atext_completion", False) == True
             or kwargs.get("atranscription", False) == True
+            or kwargs.get("arerank", False) == True
         ):
             # [OPTIONAL] CHECK MAX RETRIES / REQUEST
             if litellm.num_retries_per_request is not None: