diff --git a/airflow/models/dagrun.py b/airflow/models/dagrun.py
index e7fa37c82f93a..b28d2fbf02fc1 100644
--- a/airflow/models/dagrun.py
+++ b/airflow/models/dagrun.py
@@ -52,7 +52,6 @@
 from sqlalchemy_utils import UUIDType
 
 from airflow import settings
-from airflow.api_internal.internal_api_call import internal_api_call
 from airflow.callbacks.callback_requests import DagCallbackRequest
 from airflow.configuration import conf as airflow_conf
 from airflow.exceptions import AirflowException, TaskNotFound
@@ -86,9 +85,6 @@
 
     from airflow.models.dag import DAG
     from airflow.models.operator import Operator
-    from airflow.serialization.pydantic.dag_run import DagRunPydantic
-    from airflow.serialization.pydantic.taskinstance import TaskInstancePydantic
-    from airflow.serialization.pydantic.tasklog import LogTemplatePydantic
     from airflow.typing_compat import Literal
     from airflow.utils.types import ArgNotSet
 
@@ -611,7 +607,6 @@ def generate_run_id(run_type: DagRunType, logical_date: datetime) -> str:
         return DagRunType(run_type).generate_run_id(logical_date)
 
     @staticmethod
-    @internal_api_call
     @provide_session
     def fetch_task_instances(
         dag_id: str | None = None,
@@ -648,7 +643,6 @@ def fetch_task_instances(
             tis = tis.where(TI.task_id.in_(task_ids))
         return session.scalars(tis).all()
 
-    @internal_api_call
     def _check_last_n_dagruns_failed(self, dag_id, max_consecutive_failed_dag_runs, session):
         """Check if last N dags failed."""
         dag_runs = (
@@ -719,7 +713,7 @@ def get_task_instance(
         session: Session = NEW_SESSION,
         *,
         map_index: int = -1,
-    ) -> TI | TaskInstancePydantic | None:
+    ) -> TI | None:
         """
         Return the task instance specified by task_id for this dag run.
 
@@ -735,7 +729,6 @@ def get_task_instance(
         )
 
     @staticmethod
-    @internal_api_call
     @provide_session
     def fetch_task_instance(
         dag_id: str,
@@ -743,7 +736,7 @@ def fetch_task_instance(
         task_id: str,
         session: Session = NEW_SESSION,
         map_index: int = -1,
-    ) -> TI | TaskInstancePydantic | None:
+    ) -> TI | None:
         """
         Return the task instance specified by task_id for this dag run.
 
@@ -768,10 +761,9 @@ def get_dag(self) -> DAG:
         return self.dag
 
     @staticmethod
-    @internal_api_call
     @provide_session
     def get_previous_dagrun(
-        dag_run: DagRun | DagRunPydantic, state: DagRunState | None = None, session: Session = NEW_SESSION
+        dag_run: DagRun, state: DagRunState | None = None, session: Session = NEW_SESSION
     ) -> DagRun | None:
         """
         Return the previous DagRun, if there is one.
@@ -789,7 +781,6 @@ def get_previous_dagrun(
         return session.scalar(select(DagRun).where(*filters).order_by(DagRun.logical_date.desc()).limit(1))
 
     @staticmethod
-    @internal_api_call
     @provide_session
     def get_previous_scheduled_dagrun(
         dag_run_id: int,
@@ -1706,15 +1697,12 @@ def schedule_tis(
         return count
 
     @provide_session
-    def get_log_template(self, *, session: Session = NEW_SESSION) -> LogTemplate | LogTemplatePydantic:
+    def get_log_template(self, *, session: Session = NEW_SESSION) -> LogTemplate:
         return DagRun._get_log_template(log_template_id=self.log_template_id, session=session)
 
     @staticmethod
-    @internal_api_call
     @provide_session
-    def _get_log_template(
-        log_template_id: int | None, session: Session = NEW_SESSION
-    ) -> LogTemplate | LogTemplatePydantic:
+    def _get_log_template(log_template_id: int | None, session: Session = NEW_SESSION) -> LogTemplate:
         template: LogTemplate | None
         if log_template_id is None:  # DagRun created before LogTemplate introduction.
             template = session.scalar(select(LogTemplate).order_by(LogTemplate.id).limit(1))
diff --git a/airflow/serialization/pydantic/taskinstance.py b/airflow/serialization/pydantic/taskinstance.py
index 87d6f48f111b8..431903a8b9fce 100644
--- a/airflow/serialization/pydantic/taskinstance.py
+++ b/airflow/serialization/pydantic/taskinstance.py
@@ -220,7 +220,7 @@ def xcom_push(
             session=session,
         )
 
-    def get_dagrun(self, session: Session | None = None) -> DagRunPydantic:
+    def get_dagrun(self, session: Session | None = None) -> DagRun:
         """
         Return the DagRun for this TaskInstance.