diff --git a/litellm/integrations/braintrust_logging.py b/litellm/integrations/braintrust_logging.py
index 8e4e31280ee..1ddf789ed32 100644
--- a/litellm/integrations/braintrust_logging.py
+++ b/litellm/integrations/braintrust_logging.py
@@ -109,43 +109,6 @@ class BraintrustLogger(CustomLogger):
         except httpx.HTTPStatusError as e:
             raise Exception(f"Failed to register project: {e.response.text}")
 
-    @staticmethod
-    def add_metadata_from_header(litellm_params: dict, metadata: dict) -> dict:
-        """
-        Adds metadata from proxy request headers to Braintrust logging if keys start with "braintrust_"
-        and overwrites litellm_params.metadata if already included.
-
-        For example if you want to append your trace to an existing `trace_id` via header, send
-        `headers: { ..., langfuse_existing_trace_id: your-existing-trace-id }` via proxy request.
-        """
-        if litellm_params is None:
-            return metadata
-
-        if litellm_params.get("proxy_server_request") is None:
-            return metadata
-
-        if metadata is None:
-            metadata = {}
-
-        proxy_headers = (
-            litellm_params.get("proxy_server_request", {}).get("headers", {}) or {}
-        )
-
-        for metadata_param_key in proxy_headers:
-            if metadata_param_key.startswith("braintrust"):
-                trace_param_key = metadata_param_key.replace("braintrust", "", 1)
-                if trace_param_key in metadata:
-                    verbose_logger.warning(
-                        f"Overwriting Braintrust `{trace_param_key}` from request header"
-                    )
-                else:
-                    verbose_logger.debug(
-                        f"Found Braintrust `{trace_param_key}` in request header"
-                    )
-                metadata[trace_param_key] = proxy_headers.get(metadata_param_key)
-
-        return metadata
-
     async def create_default_project_and_experiment(self):
         project = await self.global_braintrust_http_handler.post(
             f"{self.api_base}/project", headers=self.headers, json={"name": "litellm"}
@@ -172,6 +135,7 @@ class BraintrustLogger(CustomLogger):
             litellm_call_id = kwargs.get("litellm_call_id")
             standard_logging_object = kwargs.get("standard_logging_object", {})
             prompt = {"messages": kwargs.get("messages")}
+
             output = None
             choices = []
             if response_obj is not None and (
@@ -276,6 +240,7 @@ class BraintrustLogger(CustomLogger):
         verbose_logger.debug("REACHES BRAINTRUST SUCCESS")
         try:
             litellm_call_id = kwargs.get("litellm_call_id")
+            standard_logging_object = kwargs.get("standard_logging_object", {})
             prompt = {"messages": kwargs.get("messages")}
             output = None
             choices = []
@@ -300,32 +265,14 @@ class BraintrustLogger(CustomLogger):
                 output = response_obj["data"]
 
             litellm_params = kwargs.get("litellm_params", {})
-            metadata = (
-                litellm_params.get("metadata", {}) or {}
-            )  # if litellm_params['metadata'] == None
-            metadata = self.add_metadata_from_header(litellm_params, metadata)
+            dynamic_metadata = litellm_params.get("dynamic_metadata", {}) or {}
+
             clean_metadata = {}
-            new_metadata = {}
-            for key, value in metadata.items():
-                if (
-                    isinstance(value, list)
-                    or isinstance(value, str)
-                    or isinstance(value, int)
-                    or isinstance(value, float)
-                ):
-                    new_metadata[key] = value
-                elif isinstance(value, BaseModel):
-                    new_metadata[key] = value.model_dump_json()
-                elif isinstance(value, dict):
-                    for k, v in value.items():
-                        if isinstance(v, datetime):
-                            value[k] = v.isoformat()
-                    new_metadata[key] = value
 
             # Get project_id from metadata or create default if needed
-            project_id = metadata.get("project_id")
+            project_id = dynamic_metadata.get("project_id")
             if project_id is None:
-                project_name = metadata.get("project_name")
+                project_name = dynamic_metadata.get("project_name")
                 project_id = (
                     await self.get_project_id_async(project_name)
                     if project_name
@@ -338,8 +285,8 @@ class BraintrustLogger(CustomLogger):
                 project_id = self.default_project_id
 
             tags = []
-            if isinstance(metadata, dict):
-                for key, value in metadata.items():
+            if isinstance(dynamic_metadata, dict):
+                for key, value in dynamic_metadata.items():
                     # generate langfuse tags - Default Tags sent to Langfuse from LiteLLM Proxy
                     if (
                         litellm.langfuse_default_tags is not None
@@ -348,25 +295,7 @@ class BraintrustLogger(CustomLogger):
                     ):
                         tags.append(f"{key}:{value}")
 
-                    # clean litellm metadata before logging
-                    if key in [
-                        "headers",
-                        "endpoint",
-                        "caching_groups",
-                        "previous_models",
-                    ]:
-                        continue
-                    else:
-                        clean_metadata[key] = value
-
             cost = kwargs.get("response_cost", None)
-            if cost is not None:
-                clean_metadata["litellm_response_cost"] = cost
-
-            # metadata.model is required for braintrust to calculate the "Estimated cost" metric
-            litellm_model = kwargs.get("model", None)
-            if litellm_model is not None:
-                clean_metadata["model"] = litellm_model
 
             metrics: Optional[dict] = None
             usage_obj = getattr(response_obj, "usage", None)
@@ -394,13 +323,13 @@ class BraintrustLogger(CustomLogger):
                     )
 
             # Allow metadata override for span name
-            span_name = metadata.get("span_name", "Chat Completion")
+            span_name = dynamic_metadata.get("span_name", "Chat Completion")
 
             request_data = {
                 "id": litellm_call_id,
                 "input": prompt["messages"],
                 "output": output,
-                "metadata": filter_json_serializable(clean_metadata),
+                "metadata": standard_logging_object,
                 "tags": tags,
                 "span_attributes": {"name": span_name, "type": "llm"},
             }