diff --git a/api/models/model.py b/api/models/model.py
index 1a31ef63d73..f13fbf572df 100644
--- a/api/models/model.py
+++ b/api/models/model.py
@@ -1956,10 +1956,6 @@ class MessageFeedback(TypeBase):
         init=False,
     )
 
-    @property
-    def from_account(self) -> Account | None:
-        return self.from_account_with_session(session=db.session())
-
     def from_account_with_session(self, *, session: Session) -> Account | None:
         return session.scalar(select(Account).where(Account.id == self.from_account_id))
 
@@ -2045,17 +2041,9 @@ class MessageAnnotation(TypeBase):
         """Return a non-null question string, falling back to the answer content."""
         return self.question or self.content
 
-    @property
-    def account(self) -> Account | None:
-        return self.account_with_session(session=db.session())
-
     def account_with_session(self, *, session: Session) -> Account | None:
         return session.scalar(select(Account).where(Account.id == self.account_id))
 
-    @property
-    def annotation_create_account(self) -> Account | None:
-        return self.annotation_create_account_with_session(session=db.session())
-
     def annotation_create_account_with_session(self, *, session: Session) -> Account | None:
         return session.scalar(select(Account).where(Account.id == self.account_id))
 
diff --git a/api/tests/unit_tests/models/test_message_annotation_session_accessors.py b/api/tests/unit_tests/models/test_message_annotation_session_accessors.py
new file mode 100644
index 00000000000..6e2de3dbed3
--- /dev/null
+++ b/api/tests/unit_tests/models/test_message_annotation_session_accessors.py
@@ -0,0 +1,106 @@
+"""Regression coverage for the ``@property``→session-parameter refactor on Message
+feedback/annotation accessors.
+
+Covers three of `api/models/model.py`'s legacy `@property` accessors that reached for the global
+``db.session`` internally and have been removed in favour of their existing explicit-session
+methods (per the pattern established in #40370/#40797/#41394/#41830, tracked in #40372):
+
+- ``MessageFeedback.from_account_with_session``
+- ``MessageAnnotation.account_with_session``
+- ``MessageAnnotation.annotation_create_account_with_session``
+
+Each accessor is exercised against the real ``sqlite_session`` fixture (a genuine SQLAlchemy
+``Session`` bound to a pristine full-schema SQLite database) so the assertions cover actual
+query behaviour rather than a mock's recorded call.
+"""
+
+from uuid import uuid4
+
+from sqlalchemy.orm import Session
+
+from models.account import Account
+from models.enums import FeedbackFromSource, FeedbackRating
+from models.model import MessageAnnotation, MessageFeedback
+
+
+def _persist_account(session: Session, *, email: str | None = None) -> Account:
+    account = Account(name="Test Account", email=email or "test@example.com")
+    session.add(account)
+    session.flush()
+    return account
+
+
+def _persist_feedback(session: Session, *, app_id: str, from_account_id: str | None) -> MessageFeedback:
+    feedback = MessageFeedback(
+        app_id=app_id,
+        conversation_id=str(uuid4()),
+        message_id=str(uuid4()),
+        rating=FeedbackRating.LIKE,
+        from_source=FeedbackFromSource.USER,
+        from_account_id=from_account_id,
+    )
+    session.add(feedback)
+    session.flush()
+    return feedback
+
+
+def _persist_annotation(session: Session, *, app_id: str, account_id: str) -> MessageAnnotation:
+    annotation = MessageAnnotation(
+        app_id=app_id,
+        conversation_id=None,
+        message_id=None,
+        question="What is AI?",
+        content="AI stands for Artificial Intelligence.",
+        account_id=account_id,
+    )
+    session.add(annotation)
+    session.flush()
+    return annotation
+
+
+class TestMessageFeedbackFromAccount:
+    def test_returns_the_feedback_author(self, sqlite_session: Session) -> None:
+        account = _persist_account(sqlite_session)
+        feedback = _persist_feedback(sqlite_session, app_id=str(uuid4()), from_account_id=account.id)
+
+        result = feedback.from_account_with_session(session=sqlite_session)
+
+        assert result is not None
+        assert result.id == account.id
+
+    def test_returns_none_when_account_missing(self, sqlite_session: Session) -> None:
+        feedback = _persist_feedback(sqlite_session, app_id=str(uuid4()), from_account_id=str(uuid4()))
+
+        assert feedback.from_account_with_session(session=sqlite_session) is None
+
+
+class TestMessageAnnotationAccount:
+    def test_returns_the_annotation_creator(self, sqlite_session: Session) -> None:
+        creator = _persist_account(sqlite_session, email="creator@example.com")
+        annotation = _persist_annotation(sqlite_session, app_id=str(uuid4()), account_id=creator.id)
+
+        result = annotation.account_with_session(session=sqlite_session)
+
+        assert result is not None
+        assert result.id == creator.id
+
+    def test_returns_none_when_account_missing(self, sqlite_session: Session) -> None:
+        annotation = _persist_annotation(sqlite_session, app_id=str(uuid4()), account_id=str(uuid4()))
+
+        assert annotation.account_with_session(session=sqlite_session) is None
+
+
+class TestMessageAnnotationAnnotationCreateAccount:
+    def test_returns_the_annotation_creator(self, sqlite_session: Session) -> None:
+        creator = _persist_account(sqlite_session, email="creator2@example.com")
+        annotation = _persist_annotation(sqlite_session, app_id=str(uuid4()), account_id=creator.id)
+
+        result = annotation.annotation_create_account_with_session(session=sqlite_session)
+
+        assert result is not None
+        assert result.id == creator.id
+
+    def test_returns_none_when_account_missing(self, sqlite_session: Session) -> None:
+        annotation = _persist_annotation(sqlite_session, app_id=str(uuid4()), account_id=str(uuid4()))
+
+        assert annotation.annotation_create_account_with_session(session=sqlite_session) is None