diff --git a/src/sentry/issues/endpoints/group_event_details.py b/src/sentry/issues/endpoints/group_event_details.py
index 6b2d4242d3b5..47c382c1d4a9 100644
--- a/src/sentry/issues/endpoints/group_event_details.py
+++ b/src/sentry/issues/endpoints/group_event_details.py
@@ -3,7 +3,7 @@
 import functools
 import logging
 from collections.abc import Sequence
-from typing import Any, NotRequired
+from typing import Any, TypedDict, cast
 
 from django.contrib.auth.models import AnonymousUser
 from drf_spectacular.utils import OpenApiParameter, extend_schema
@@ -127,9 +127,15 @@ def issue_search_query_to_conditions(
     return snql_conditions, resolved_legacy_conditions
 
 
-class GroupEventDetailsFormattedResponse(GroupEventDetailsResponse):
+class _GroupEventDetailsFormattedResponseOptional(TypedDict, total=False):
     # present only when ``?llmFormat`` is requested and the formatter option is on
-    formatted: NotRequired[FormattedResponse]
+    formatted: FormattedResponse
+
+
+class GroupEventDetailsFormattedResponse(
+    GroupEventDetailsResponse, _GroupEventDetailsFormattedResponseOptional
+):
+    pass
 
 
 @extend_schema(tags=["Events"])
@@ -292,4 +298,4 @@ def get(
         )
         if data is None:
             return Response({"detail": "Failed to load event"}, status=500)
-        return Response(data)
+        return Response(cast(GroupEventDetailsFormattedResponse, data))
diff --git a/src/sentry/seer/autofix/types.py b/src/sentry/seer/autofix/types.py
index 56945be90034..fccf6fcb8a9b 100644
--- a/src/sentry/seer/autofix/types.py
+++ b/src/sentry/seer/autofix/types.py
@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import Annotated, Any, Literal, NotRequired, TypedDict, Union
+from typing import Annotated, Any, Literal, TypedDict, Union
 
 from pydantic import BaseModel, Field
 
@@ -38,9 +38,12 @@ class AutofixHandoffResponse(TypedDict):
     failures: list[dict[str, Any]]
 
 
-class AutofixStateResponse(TypedDict):
+class _AutofixStateResponseOptional(TypedDict, total=False):
+    # present only when ``?llmFormat`` is requested and the formatter option is on
+    formatted: FormattedResponse
+
+
+class AutofixStateResponse(_AutofixStateResponseOptional):
     """Response type for the GET endpoint"""
 
     autofix: dict[str, Any] | None
-    # present only when ``?llmFormat`` is requested and the formatter option is on
-    formatted: NotRequired[FormattedResponse]