diff --git a/etc/ci/report_aggregated_expected_results.py b/etc/ci/report_aggregated_expected_results.py
index ac93951ca6e..fbfe763d74c 100755
--- a/etc/ci/report_aggregated_expected_results.py
+++ b/etc/ci/report_aggregated_expected_results.py
@@ -184,7 +184,16 @@ def get_pr_number() -> Optional[str]:
     return None
 
 
-def create_check_run(body: str, tag: str = ""):
+def create_github_reports(body: str, tag: str = ""):
+    # GitHub will set a special environment variable which points to a file where
+    # a job summary can be appended. This is produced in addition to the GitHub
+    # check run below, as it has a larger length limit.
+    if "GITHUB_STEP_SUMMARY" in os.environ:
+        with open(os.environ["GITHUB_STEP_SUMMARY"], "a") as f:
+            print(body, file=f)
+
+    # Create a GitHub check run. This is more user friendly than a job summary,
+    # but has a very limited size -- thus it may fail.
     # This process is based on the documentation here:
     # https://docs.github.com/en/rest/checks/runs?apiVersion=2022-11-28#create-a-check-runs
     results = json.loads(os.environ.get("RESULTS", "{}"))
@@ -237,16 +246,16 @@ def main():
     results = get_results(filenames, args.tag)
     if not results:
         print("Did not find any unexpected results.")
-        create_check_run("Did not find any unexpected results.", args.tag)
+        create_github_reports("Did not find any unexpected results.", args.tag)
         return
 
     print(results.to_string())
 
-    pr_number = get_pr_number()
     html_string = ElementTree.tostring(
         results.to_html(), encoding="unicode")
-    create_check_run(html_string, args.tag)
+    create_github_reports(html_string, args.tag)
 
+    pr_number = get_pr_number()
     if pr_number:
         process = subprocess.Popen(
             ['gh', 'pr', 'comment', pr_number, '-F', '-'], stdin=subprocess.PIPE)