diff --git a/litellm/cost_calculator.py b/litellm/cost_calculator.py
index 17f626da070..04e399851e0 100644
--- a/litellm/cost_calculator.py
+++ b/litellm/cost_calculator.py
@@ -1914,7 +1914,7 @@ def completion_cost(
                             model=search_model,
                             custom_llm_provider=custom_llm_provider,
                             number_of_queries=number_of_queries,
-                            response=completion_response,
+                            response=_ATTRIBUTE_VALUE.validate_python(completion_response),
                             optional_params={
                                 **(get_hidden_params(completion_response) or {}),
                                 **(optional_params or {}),
diff --git a/litellm/llms/exa_ai/search/cost_calculator.py b/litellm/llms/exa_ai/search/cost_calculator.py
index 5b8d6f96602..8477a913754 100644
--- a/litellm/llms/exa_ai/search/cost_calculator.py
+++ b/litellm/llms/exa_ai/search/cost_calculator.py
@@ -73,7 +73,9 @@ def exa_ai_price_fields(model: str, entry: object) -> frozenset[str]:
     if not isinstance(entry, Mapping):
         return frozenset()
     fields: Final = _ENTRY.validate_python(entry)
-    registered: Final = entry.registered_fields & _PRICE_FIELDS if isinstance(entry, AliasedCostEntry) else frozenset()
+    registered: Final[frozenset[str]] = (
+        entry.registered_fields & _PRICE_FIELDS if isinstance(entry, AliasedCostEntry) else frozenset()
+    )
     if registered:
         return registered
     source: Final = get_model_cost_map_source_info()
@@ -108,11 +110,14 @@ def _non_negative_int(value: object) -> int | None:
 
 
 def exa_ai_requested_results(optional_params: Mapping[str, object]) -> int:
-    for key in ("max_results", "numResults"):
-        requested: Final = _non_negative_int(optional_params.get(key))
-        if requested is not None:
-            return requested
-    return EXA_AI_INCLUDED_RESULTS
+    return next(
+        (
+            requested
+            for key in ("max_results", "numResults")
+            if (requested := _non_negative_int(optional_params.get(key))) is not None
+        ),
+        EXA_AI_INCLUDED_RESULTS,
+    )
 
 
 def _requests_summaries(optional_params: Mapping[str, object]) -> bool:
diff --git a/litellm/llms/exa_ai/search/transformation.py b/litellm/llms/exa_ai/search/transformation.py
index b8b76404bcc..5d2ff5816c8 100644
--- a/litellm/llms/exa_ai/search/transformation.py
+++ b/litellm/llms/exa_ai/search/transformation.py
@@ -4,7 +4,7 @@ Calls Exa AI's /search endpoint to search the web.
 Exa AI API Reference: https://docs.exa.ai/reference/search
 """
 
-from collections.abc import Iterable, Mapping, Sequence
+from collections.abc import Iterable, Mapping
 from typing import Final
 
 import httpx
diff --git a/litellm/search/cost_calculator.py b/litellm/search/cost_calculator.py
index b5efe0a68c9..df2c527e638 100644
--- a/litellm/search/cost_calculator.py
+++ b/litellm/search/cost_calculator.py
@@ -104,6 +104,7 @@ def search_provider_cost_per_query(
         custom_llm_provider: Provider name (e.g., "exa_ai", "tavily")
         number_of_queries: Number of search queries performed (default: 1)
         optional_params: Optional parameters including max_results for tiered pricing
+        response: Search response carrying Exa's reported cost
 
     Returns:
         Tuple of (input_cost, output_cost) where output_cost is always 0.0
@@ -122,7 +123,7 @@ def search_provider_cost_per_query(
 
     pricing_model: Final = _pricing_model(model, custom_llm_provider, optional_params)
     params: Final = optional_params if optional_params is not None else EMPTY_OPTIONAL_PARAMS
-    exa_price_fields: Final = (
+    exa_price_fields: Final[frozenset[str]] = (
         exa_ai_price_fields(
             _generic_search_entry(pricing_model, custom_llm_provider),
             _live_entry(_generic_search_entry(pricing_model, custom_llm_provider)),
diff --git a/litellm/utils.py b/litellm/utils.py
index 0d3d1d19173..78b2c8e9557 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -3516,7 +3516,7 @@ def _replace_cost_map_entry(
         current.registered_fields if isinstance(current, AliasedCostEntry) else frozenset()
     )
     supplied_fields: Final = frozenset(name for name, value in registration.items() if value is not None)
-    replaced_fields: Final = (
+    replaced_fields: Final[frozenset[str]] = (
         frozenset({"input_cost_per_query", "tiered_pricing"})
         if merged.get("litellm_provider") == "exa_ai" and supplied_fields & {"input_cost_per_query", "tiered_pricing"}
         else frozenset()