diff --git a/generated_types.json b/generated_types.json
index 21fb1095..cca6da02 100644
--- a/generated_types.json
+++ b/generated_types.json
@@ -8473,7 +8473,7 @@
                 "type": "null"
               }
             ],
-            "description": "Execution scope for topic automation. Defaults to span-level execution."
+            "description": "Execution scope for topic automation."
           },
           "data_scope": {
             "$ref": "#/components/schemas/TopicAutomationDataScope"
@@ -8689,7 +8689,17 @@
           },
           "source_facet": {
             "type": "string",
-            "description": "The facet field name to use as input for classification"
+            "description": "Materialized facet field name used when source_facet_function is absent"
+          },
+          "source_facet_function": {
+            "allOf": [
+              {
+                "$ref": "#/components/schemas/SavedFunctionId"
+              },
+              {
+                "description": "The stable function reference for the source facet"
+              }
+            ]
           },
           "embedding_model": {
             "type": "string",
diff --git a/py/src/braintrust/_generated_types.py b/py/src/braintrust/_generated_types.py
index f40678a4..ca138a15 100644
--- a/py/src/braintrust/_generated_types.py
+++ b/py/src/braintrust/_generated_types.py
@@ -2680,6 +2680,42 @@ class TopicDigestAutomationConfig(TypedDict):
     """
 
 
+class SourceFacetFunctionSourceFacetFunction(TypedDict):
+    type: Literal['function']
+    id: str
+    version: NotRequired[str | None]
+    """
+    The version of the function
+    """
+
+
+class SourceFacetFunctionSourceFacetFunction1(TypedDict):
+    type: Literal['global']
+    name: str
+    function_type: NotRequired[FunctionTypeEnum | None]
+
+
+class SourceFacetFunctionSourceFacetFunction2(TypedDict):
+    pass
+
+
+class SourceFacetFunctionSourceFacetFunction3(
+    SourceFacetFunctionSourceFacetFunction, SourceFacetFunctionSourceFacetFunction2
+):
+    pass
+
+
+class SourceFacetFunctionSourceFacetFunction4(
+    SourceFacetFunctionSourceFacetFunction1, SourceFacetFunctionSourceFacetFunction2
+):
+    pass
+
+
+SourceFacetFunction: TypeAlias = (
+    SourceFacetFunctionSourceFacetFunction3 | SourceFacetFunctionSourceFacetFunction4
+)
+
+
 class Function1Function1(TypedDict):
     type: Literal['function']
     id: str
@@ -3812,7 +3848,7 @@ class TopicAutomationConfig(TypedDict):
     """
     scope: NotRequired[SpanScope | TraceScope | GroupScope | None]
     """
-    Execution scope for topic automation. Defaults to span-level execution.
+    Execution scope for topic automation.
     """
     data_scope: NotRequired[TopicAutomationDataScope | None]
     btql_filter: NotRequired[str | None]
@@ -3839,8 +3875,9 @@ class TopicMapData(TypedDict):
     type: Literal['topic_map']
     source_facet: str
     """
-    The facet field name to use as input for classification
+    Materialized facet field name used when source_facet_function is absent
     """
+    source_facet_function: NotRequired[SourceFacetFunction | None]
     embedding_model: str
     """
     The embedding model to use for embedding facet values
diff --git a/py/src/braintrust/generated_types.py b/py/src/braintrust/generated_types.py
index 16ddb3ef..06439648 100644
--- a/py/src/braintrust/generated_types.py
+++ b/py/src/braintrust/generated_types.py
@@ -1,4 +1,4 @@
-"""Auto-generated file (content hash 267ce67890c684fe) -- do not modify"""
+"""Auto-generated file (content hash a530347bf79cb618) -- do not modify"""
 
 from ._generated_types import (
     Acl,