diff --git a/temporalio/contrib/openai_agents/_invoke_model_activity.py b/temporalio/contrib/openai_agents/_invoke_model_activity.py
index ed4313537..5fa31f472 100644
--- a/temporalio/contrib/openai_agents/_invoke_model_activity.py
+++ b/temporalio/contrib/openai_agents/_invoke_model_activity.py
@@ -160,7 +160,7 @@ def __init__(self, model_provider: Optional[ModelProvider] = None):
 
     @activity.defn
     @_auto_heartbeater
-    async def invoke_model_activity(self, input: ActivityModelInput) -> ModelResponse:
+    async def invoke_model(self, input: ActivityModelInput) -> ModelResponse:
         """Activity that invokes a model with the given input."""
         model = self._model_provider.get_model(input.get("model_name"))
 
diff --git a/temporalio/contrib/openai_agents/_temporal_model_stub.py b/temporalio/contrib/openai_agents/_temporal_model_stub.py
index 11f1ddc5e..986efc0e5 100644
--- a/temporalio/contrib/openai_agents/_temporal_model_stub.py
+++ b/temporalio/contrib/openai_agents/_temporal_model_stub.py
@@ -153,7 +153,7 @@ def make_tool_info(tool: Tool) -> ToolInput:
             summary = None
 
         return await workflow.execute_activity_method(
-            ModelActivity.invoke_model_activity,
+            ModelActivity.invoke_model,
             activity_input,
             summary=summary,
             task_queue=self.model_params.task_queue,
diff --git a/temporalio/contrib/openai_agents/_temporal_openai_agents.py b/temporalio/contrib/openai_agents/_temporal_openai_agents.py
index 73b9723d0..d407a8f94 100644
--- a/temporalio/contrib/openai_agents/_temporal_openai_agents.py
+++ b/temporalio/contrib/openai_agents/_temporal_openai_agents.py
@@ -282,7 +282,7 @@ def configure_worker(self, config: WorkerConfig) -> WorkerConfig:
             OpenAIAgentsTracingInterceptor()
         ]
         config["activities"] = list(config.get("activities") or []) + [
-            ModelActivity(self._model_provider).invoke_model_activity
+            ModelActivity(self._model_provider).invoke_model,
         ]
         return self.next_worker_plugin.configure_worker(config)
 
diff --git a/tests/contrib/openai_agents/histories/agents-as-tools-workflow-history.json b/tests/contrib/openai_agents/histories/agents-as-tools-workflow-history.json
index 21090cbdd..84953a3a6 100644
--- a/tests/contrib/openai_agents/histories/agents-as-tools-workflow-history.json
+++ b/tests/contrib/openai_agents/histories/agents-as-tools-workflow-history.json
@@ -96,7 +96,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "1",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "1e8fa3c8-41b4-4ea7-907b-63088b63e36f",
@@ -233,7 +233,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "2",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "1e8fa3c8-41b4-4ea7-907b-63088b63e36f",
@@ -370,7 +370,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "3",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "1e8fa3c8-41b4-4ea7-907b-63088b63e36f",
@@ -499,7 +499,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "4",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "1e8fa3c8-41b4-4ea7-907b-63088b63e36f",
diff --git a/tests/contrib/openai_agents/histories/customer-service-workflow-history.json b/tests/contrib/openai_agents/histories/customer-service-workflow-history.json
index d5c878c4b..91080ac01 100644
--- a/tests/contrib/openai_agents/histories/customer-service-workflow-history.json
+++ b/tests/contrib/openai_agents/histories/customer-service-workflow-history.json
@@ -162,7 +162,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "1",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "be82986c-9ddc-441b-9833-c3fce7c79df1",
@@ -400,7 +400,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "2",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "be82986c-9ddc-441b-9833-c3fce7c79df1",
@@ -537,7 +537,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "3",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "be82986c-9ddc-441b-9833-c3fce7c79df1",
@@ -767,7 +767,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "4",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "be82986c-9ddc-441b-9833-c3fce7c79df1",
@@ -1005,7 +1005,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "5",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "be82986c-9ddc-441b-9833-c3fce7c79df1",
@@ -1142,7 +1142,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "6",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "be82986c-9ddc-441b-9833-c3fce7c79df1",
diff --git a/tests/contrib/openai_agents/histories/hello-workflow-history.json b/tests/contrib/openai_agents/histories/hello-workflow-history.json
index 9532fc831..c15905ec8 100644
--- a/tests/contrib/openai_agents/histories/hello-workflow-history.json
+++ b/tests/contrib/openai_agents/histories/hello-workflow-history.json
@@ -96,7 +96,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "1",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "5dd7a6ba-834c-4206-bcbc-a02599f1b54c",
diff --git a/tests/contrib/openai_agents/histories/input-guardrail-workflow-history.json b/tests/contrib/openai_agents/histories/input-guardrail-workflow-history.json
index 2054b1750..73094f666 100644
--- a/tests/contrib/openai_agents/histories/input-guardrail-workflow-history.json
+++ b/tests/contrib/openai_agents/histories/input-guardrail-workflow-history.json
@@ -96,7 +96,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "1",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "e488932b-c66d-48b6-97cb-7b8feaa1c41c",
@@ -151,7 +151,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "2",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "e488932b-c66d-48b6-97cb-7b8feaa1c41c",
@@ -370,7 +370,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "3",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "e488932b-c66d-48b6-97cb-7b8feaa1c41c",
@@ -425,7 +425,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "4",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "e488932b-c66d-48b6-97cb-7b8feaa1c41c",
diff --git a/tests/contrib/openai_agents/histories/output-guardrail-workflow-history.json b/tests/contrib/openai_agents/histories/output-guardrail-workflow-history.json
index a7a62944c..0cec5809f 100644
--- a/tests/contrib/openai_agents/histories/output-guardrail-workflow-history.json
+++ b/tests/contrib/openai_agents/histories/output-guardrail-workflow-history.json
@@ -86,7 +86,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "1",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "2227feb4-0f1d-4092-9653-308e9366edb0",
diff --git a/tests/contrib/openai_agents/histories/research-workflow-history.json b/tests/contrib/openai_agents/histories/research-workflow-history.json
index be38a0be0..99b02cdf6 100644
--- a/tests/contrib/openai_agents/histories/research-workflow-history.json
+++ b/tests/contrib/openai_agents/histories/research-workflow-history.json
@@ -96,7 +96,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "1",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -233,7 +233,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "2",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -288,7 +288,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "3",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -343,7 +343,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "4",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -398,7 +398,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "5",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -453,7 +453,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "6",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -508,7 +508,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "7",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -563,7 +563,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "8",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -618,7 +618,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "9",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -673,7 +673,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "10",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -728,7 +728,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "11",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
@@ -1603,7 +1603,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "12",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "fc97ba3c-6c32-4f4c-a986-8d7f4f5c7f80",
diff --git a/tests/contrib/openai_agents/histories/tools-workflow-history.json b/tests/contrib/openai_agents/histories/tools-workflow-history.json
index 66304d61e..d7b925857 100644
--- a/tests/contrib/openai_agents/histories/tools-workflow-history.json
+++ b/tests/contrib/openai_agents/histories/tools-workflow-history.json
@@ -96,7 +96,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "1",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "98bba13c-e75a-446d-a2f8-077680fb23af",
@@ -362,7 +362,7 @@
       "activityTaskScheduledEventAttributes": {
         "activityId": "3",
         "activityType": {
-          "name": "invoke_model_activity"
+          "name": "invoke_model"
         },
         "taskQueue": {
           "name": "98bba13c-e75a-446d-a2f8-077680fb23af",