diff --git a/langfuse/api/reference.md b/langfuse/api/reference.md
index b9e598e7e..f2e9baa07 100644
--- a/langfuse/api/reference.md
+++ b/langfuse/api/reference.md
@@ -6906,6 +6906,38 @@ client.trace.list()
 <dl>
 <dd>
 
+**filter:** `typing.Optional[str]` 
+
+JSON string containing an array of filter conditions. When provided, this takes precedence over legacy filter parameters (userId, name, sessionId, tags, version, release, environment, fromTimestamp, toTimestamp).
+Each filter condition has the following structure:
+```json
+[
+  {
+    "type": string,           // Required. One of: "datetime", "string", "number", "stringOptions", "categoryOptions", "arrayOptions", "stringObject", "numberObject", "boolean", "null"
+    "column": string,         // Required. Column to filter on
+    "operator": string,       // Required. Operator based on type:
+                              // - datetime: ">", "<", ">=", "<="
+                              // - string: "=", "contains", "does not contain", "starts with", "ends with"
+                              // - stringOptions: "any of", "none of"
+                              // - categoryOptions: "any of", "none of"
+                              // - arrayOptions: "any of", "none of", "all of"
+                              // - number: "=", ">", "<", ">=", "<="
+                              // - stringObject: "=", "contains", "does not contain", "starts with", "ends with"
+                              // - numberObject: "=", ">", "<", ">=", "<="
+                              // - boolean: "=", "<>"
+                              // - null: "is null", "is not null"
+    "value": any,             // Required (except for null type). Value to compare against. Type depends on filter type
+    "key": string             // Required only for stringObject, numberObject, and categoryOptions types when filtering on nested fields like metadata
+  }
+]
+```
+    
+</dd>
+</dl>
+
+<dl>
+<dd>
+
 **request_options:** `typing.Optional[RequestOptions]` — Request-specific configuration.
     
 </dd>
diff --git a/langfuse/api/resources/trace/client.py b/langfuse/api/resources/trace/client.py
index 824142a27..7c5d803d7 100644
--- a/langfuse/api/resources/trace/client.py
+++ b/langfuse/api/resources/trace/client.py
@@ -173,6 +173,7 @@ def list(
         release: typing.Optional[str] = None,
         environment: typing.Optional[typing.Union[str, typing.Sequence[str]]] = None,
         fields: typing.Optional[str] = None,
+        filter: typing.Optional[str] = None,
         request_options: typing.Optional[RequestOptions] = None,
     ) -> Traces:
         """
@@ -216,6 +217,31 @@ def list(
         fields : typing.Optional[str]
             Comma-separated list of fields to include in the response. Available field groups: 'core' (always included), 'io' (input, output, metadata), 'scores', 'observations', 'metrics'. If not specified, all fields are returned. Example: 'core,scores,metrics'. Note: Excluded 'observations' or 'scores' fields return empty arrays; excluded 'metrics' returns -1 for 'totalCost' and 'latency'.
 
+        filter : typing.Optional[str]
+            JSON string containing an array of filter conditions. When provided, this takes precedence over legacy filter parameters (userId, name, sessionId, tags, version, release, environment, fromTimestamp, toTimestamp).
+            Each filter condition has the following structure:
+            ```json
+            [
+              {
+                "type": string,           // Required. One of: "datetime", "string", "number", "stringOptions", "categoryOptions", "arrayOptions", "stringObject", "numberObject", "boolean", "null"
+                "column": string,         // Required. Column to filter on
+                "operator": string,       // Required. Operator based on type:
+                                          // - datetime: ">", "<", ">=", "<="
+                                          // - string: "=", "contains", "does not contain", "starts with", "ends with"
+                                          // - stringOptions: "any of", "none of"
+                                          // - categoryOptions: "any of", "none of"
+                                          // - arrayOptions: "any of", "none of", "all of"
+                                          // - number: "=", ">", "<", ">=", "<="
+                                          // - stringObject: "=", "contains", "does not contain", "starts with", "ends with"
+                                          // - numberObject: "=", ">", "<", ">=", "<="
+                                          // - boolean: "=", "<>"
+                                          // - null: "is null", "is not null"
+                "value": any,             // Required (except for null type). Value to compare against. Type depends on filter type
+                "key": string             // Required only for stringObject, numberObject, and categoryOptions types when filtering on nested fields like metadata
+              }
+            ]
+            ```
+
         request_options : typing.Optional[RequestOptions]
             Request-specific configuration.
 
@@ -258,6 +284,7 @@ def list(
                 "release": release,
                 "environment": environment,
                 "fields": fields,
+                "filter": filter,
             },
             request_options=request_options,
         )
@@ -524,6 +551,7 @@ async def list(
         release: typing.Optional[str] = None,
         environment: typing.Optional[typing.Union[str, typing.Sequence[str]]] = None,
         fields: typing.Optional[str] = None,
+        filter: typing.Optional[str] = None,
         request_options: typing.Optional[RequestOptions] = None,
     ) -> Traces:
         """
@@ -567,6 +595,31 @@ async def list(
         fields : typing.Optional[str]
             Comma-separated list of fields to include in the response. Available field groups: 'core' (always included), 'io' (input, output, metadata), 'scores', 'observations', 'metrics'. If not specified, all fields are returned. Example: 'core,scores,metrics'. Note: Excluded 'observations' or 'scores' fields return empty arrays; excluded 'metrics' returns -1 for 'totalCost' and 'latency'.
 
+        filter : typing.Optional[str]
+            JSON string containing an array of filter conditions. When provided, this takes precedence over legacy filter parameters (userId, name, sessionId, tags, version, release, environment, fromTimestamp, toTimestamp).
+            Each filter condition has the following structure:
+            ```json
+            [
+              {
+                "type": string,           // Required. One of: "datetime", "string", "number", "stringOptions", "categoryOptions", "arrayOptions", "stringObject", "numberObject", "boolean", "null"
+                "column": string,         // Required. Column to filter on
+                "operator": string,       // Required. Operator based on type:
+                                          // - datetime: ">", "<", ">=", "<="
+                                          // - string: "=", "contains", "does not contain", "starts with", "ends with"
+                                          // - stringOptions: "any of", "none of"
+                                          // - categoryOptions: "any of", "none of"
+                                          // - arrayOptions: "any of", "none of", "all of"
+                                          // - number: "=", ">", "<", ">=", "<="
+                                          // - stringObject: "=", "contains", "does not contain", "starts with", "ends with"
+                                          // - numberObject: "=", ">", "<", ">=", "<="
+                                          // - boolean: "=", "<>"
+                                          // - null: "is null", "is not null"
+                "value": any,             // Required (except for null type). Value to compare against. Type depends on filter type
+                "key": string             // Required only for stringObject, numberObject, and categoryOptions types when filtering on nested fields like metadata
+              }
+            ]
+            ```
+
         request_options : typing.Optional[RequestOptions]
             Request-specific configuration.
 
@@ -617,6 +670,7 @@ async def main() -> None:
                 "release": release,
                 "environment": environment,
                 "fields": fields,
+                "filter": filter,
             },
             request_options=request_options,
         )