diff --git a/src/sentry/preprod/tasks.py b/src/sentry/preprod/tasks.py
index 36f5a25403bc01..843ffeaa57076d 100644
--- a/src/sentry/preprod/tasks.py
+++ b/src/sentry/preprod/tasks.py
@@ -19,6 +19,7 @@
 )
 from sentry.preprod.producer import produce_preprod_artifact_to_kafka
 from sentry.preprod.size_analysis.models import SizeAnalysisResults
+from sentry.preprod.size_analysis.tasks import compare_preprod_artifact_size_analysis
 from sentry.preprod.vcs.status_checks.size.tasks import create_preprod_status_check_task
 from sentry.silo.base import SiloMode
 from sentry.tasks.assemble import (
@@ -441,6 +442,15 @@ def _assemble_preprod_artifact_size_analysis(
         }
     )
 
+    # Trigger size analysis comparison if eligible
+    compare_preprod_artifact_size_analysis.apply_async(
+        kwargs={
+            "project_id": project.id,
+            "org_id": org_id,
+            "artifact_id": artifact_id,
+        }
+    )
+
 
 @instrumented_task(
     name="sentry.preprod.tasks.assemble_preprod_artifact_size_analysis",