diff --git a/fedn/fedn/network/api/interface.py b/fedn/fedn/network/api/interface.py
index fdf282c83..584e2d74b 100644
--- a/fedn/fedn/network/api/interface.py
+++ b/fedn/fedn/network/api/interface.py
@@ -1011,7 +1011,7 @@ def start_session(
         rounds=5,
         round_timeout=180,
         round_buffer_size=-1,
-        delete_models=False,
+        delete_models=True,
         validate=True,
         helper="numpyhelper",
         min_clients=1,