diff --git a/litellm/litellm_core_utils/llm_response_utils/convert_dict_to_response.py b/litellm/litellm_core_utils/llm_response_utils/convert_dict_to_response.py
index bf038a57211..b64aeeb7271 100644
--- a/litellm/litellm_core_utils/llm_response_utils/convert_dict_to_response.py
+++ b/litellm/litellm_core_utils/llm_response_utils/convert_dict_to_response.py
@@ -260,7 +260,7 @@ async def convert_to_streaming_response_async(
             index=idx,
             delta=delta,
             logprobs=logprobs,
-            **_choice_provider_extras(choice, _CACHED_CHOICE_RESERVED_KEYS),
+            **_choice_provider_extras(_FIELD_MAP.validate_python(choice), _CACHED_CHOICE_RESERVED_KEYS),
         )
         choice_list.append(choice)
 
@@ -353,7 +353,7 @@ def convert_to_streaming_response(
             delta=delta,
             logprobs=logprobs,
             enhancements=enhancements,
-            **_choice_provider_extras(choice, _CACHED_CHOICE_RESERVED_KEYS),
+            **_choice_provider_extras(_FIELD_MAP.validate_python(choice), _CACHED_CHOICE_RESERVED_KEYS),
         )
 
         choice_list.append(choice)
@@ -858,7 +858,9 @@ def convert_to_model_response_object(
                     logprobs=logprobs,
                     enhancements=enhancements,
                     provider_specific_fields=provider_specific_fields,
-                    **_choice_provider_extras(provider_specific_fields, _CHOICES_EXPLICIT_KWARGS),
+                    **_choice_provider_extras(
+                        _FIELD_MAP.validate_python(provider_specific_fields), _CHOICES_EXPLICIT_KWARGS
+                    ),
                 )
                 if provider_sent_logprobs and logprobs is None:
                     choice.logprobs = None
diff --git a/litellm/litellm_core_utils/streaming_handler.py b/litellm/litellm_core_utils/streaming_handler.py
index eccab7beacb..8c00e0d43b2 100644
--- a/litellm/litellm_core_utils/streaming_handler.py
+++ b/litellm/litellm_core_utils/streaming_handler.py
@@ -17,7 +17,7 @@ import httpx
 from openai.types.chat import ChatCompletionChunk
 from openai.types.chat.chat_completion_chunk import Choice as ChunkChoice
 from openai.types.chat.chat_completion_chunk import ChoiceDelta
-from pydantic import BaseModel, ValidationError
+from pydantic import BaseModel, TypeAdapter, ValidationError
 from typing_extensions import NotRequired, TypedDict
 
 import litellm
@@ -71,6 +71,7 @@ TOOL_CALLS_ATTRIBUTE: Final = "tool_calls"
 FUNCTION_CALL_ATTRIBUTE: Final = "function_call"
 
 _SYNC_ITER_EXHAUSTED: Final = object()
+_STREAM_OPTIONS: Final = TypeAdapter(Mapping[str, object] | None)
 
 _GCHUNK_FIELDS: Final[frozenset] = frozenset(GChunk.__annotations__)
 _CompleteStreamingResponse = ModelResponse | TextCompletionResponse | ModelResponseStream | None
@@ -375,8 +376,8 @@ class CustomStreamWrapper:
         self.received_model_id: str | None = None
         self.logging_loop = None
         self.rules = Rules()
-        self.stream_options: Mapping[str, object] | None = stream_options or getattr(
-            logging_obj, "stream_options", None
+        self.stream_options: Mapping[str, object] | None = _STREAM_OPTIONS.validate_python(
+            stream_options or getattr(logging_obj, "stream_options", None)
         )
         self.messages = getattr(logging_obj, "messages", None)
         self.sent_stream_usage = False
diff --git a/litellm/proxy/common_request_processing.py b/litellm/proxy/common_request_processing.py
index 28ae51baf79..f0c110bd008 100644
--- a/litellm/proxy/common_request_processing.py
+++ b/litellm/proxy/common_request_processing.py
@@ -57,6 +57,7 @@ from litellm.litellm_core_utils.bug_report import (
     strip_bug_report_notice,
 )
 from litellm.litellm_core_utils.core_helpers import (
+    as_str_mapping,
     get_or_create_metadata_bucket,
     independent_snapshot,
     is_expected_client_error,
@@ -568,6 +569,7 @@ def stream_usage_tracking_updates(
         return scrub
     always_include: Final = general_settings.get("always_include_stream_usage")
     stream_options: Final = data.get("stream_options")
+    stream_options_fields: Final = as_str_mapping(stream_options)
     if always_include is True:
         if "stream_options" not in data:
             return {**scrub, "stream_options": {"include_usage": True}, STREAM_USAGE_INJECTED_FIELD: True}
@@ -587,8 +589,8 @@ def stream_usage_tracking_updates(
     if not supports_stream_options():
         return scrub
     merged_stream_options: Final = (
-        {k: v for k, v in stream_options.items() if k != "continuous_usage_stats"}
-        if isinstance(stream_options, dict)
+        {key: value for key, value in stream_options_fields.items() if key != "continuous_usage_stats"}
+        if isinstance(stream_options, dict) and stream_options_fields is not None
         else {}
     )
     return {
diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 5ead86da401..40507cb48fc 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -10086,7 +10086,7 @@ def _fast_serialize_simple_model_response_stream(
     choice: Final = choices[0]
     if getattr(choice, "logprobs", None) is not None or getattr(choice, "enhancements", None) is not None:
         return None
-    if _streaming_choice_carries_provider_extras(choice):
+    if _streaming_choice_carries_provider_extras(chunk.choices[0]):
         return None
 
     delta: Final[object] = getattr(choice, "delta", None)