diff --git a/agenta-backend/agenta_backend/services/llm_apps_service.py b/agenta-backend/agenta_backend/services/llm_apps_service.py
index d8ce93cb5e..93a17d3d54 100644
--- a/agenta-backend/agenta_backend/services/llm_apps_service.py
+++ b/agenta-backend/agenta_backend/services/llm_apps_service.py
@@ -58,12 +58,24 @@ def extract_result_from_response(response: dict):
             if "tree" in response:
                 trace_tree = response.get("tree", {}).get("nodes", [])[0]
 
-                latency = (
-                    get_nested_value(
-                        trace_tree, ["metrics", "acc", "duration", "total"]
-                    )
-                    / 1000
+                duration_ms = get_nested_value(
+                    trace_tree, ["metrics", "acc", "duration", "total"]
                 )
+                if duration_ms:
+                    duration_seconds = duration_ms / 1000
+                else:
+                    start_time = get_nested_value(trace_tree, ["time", "start"])
+                    end_time = get_nested_value(trace_tree, ["time", "end"])
+
+                    if start_time and end_time:
+                        duration_seconds = (
+                            datetime.fromisoformat(end_time)
+                            - datetime.fromisoformat(start_time)
+                        ).total_seconds()
+                    else:
+                        duration_seconds = None
+
+                latency = duration_seconds
                 cost = get_nested_value(
                     trace_tree, ["metrics", "acc", "costs", "total"]
                 )