diff --git a/clients/python/llmengine/data_types/gen/openai.py b/clients/python/llmengine/data_types/gen/openai.py
index 841ee570..73ed01fd 100644
--- a/clients/python/llmengine/data_types/gen/openai.py
+++ b/clients/python/llmengine/data_types/gen/openai.py
@@ -11516,7 +11516,7 @@ class EvalRunList(BaseModel):
 
 class InputItem(BaseModel):
     __root__: Annotated[
-        Union[EasyInputMessage, Item, ItemReferenceParam], Field(discriminator="type")
+        Union[EasyInputMessage, Item, ItemReferenceParam], Field()
     ]
 
 
diff --git a/clients/python/pyproject.toml b/clients/python/pyproject.toml
index af9ed901..eed80b28 100644
--- a/clients/python/pyproject.toml
+++ b/clients/python/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "scale-llm-engine"
-version = "0.0.0.beta47"
+version = "0.0.0.beta48"
 description = "Scale LLM Engine Python client"
 license = "Apache-2.0"
 authors = ["Phil Chen <phil.chen@scale.com>"]