diff --git a/src/appier_extras/parts/diag/models/request.py b/src/appier_extras/parts/diag/models/request.py
index 092c43f4..ae625683 100644
--- a/src/appier_extras/parts/diag/models/request.py
+++ b/src/appier_extras/parts/diag/models/request.py
@@ -86,6 +86,12 @@ class DiagRequest(base.DiagBase):
         immutable = True
     )
 
+    length = appier.field(
+        type = int,
+        index = "all",
+        immutable = True
+    )
+
     browser = appier.field(
         index = "all",
         immutable = True
diff --git a/src/appier_extras/parts/diag/part.py b/src/appier_extras/parts/diag/part.py
index d267eb30..89d3e79c 100644
--- a/src/appier_extras/parts/diag/part.py
+++ b/src/appier_extras/parts/diag/part.py
@@ -231,6 +231,7 @@ def _store_log(self):
             code = self.request.code,
             protocol = self.request.protocol,
             duration = self.request.duration,
+            length = self.request.result_l,
             browser = self._browser,
             headers = self.request.in_headers,
             browser_info = self.request.browser_info,
@@ -302,6 +303,7 @@ def _get_item_normal(self):
         item.update(
             protocol = self.request.protocol,
             duration = self.request.duration,
+            length = self.request.result_l,
             browser = self._browser,
             in_headers = self.request.in_headers,
             out_headers = self.request.out_headers,