diff --git a/agent/auxiliary_client.py b/agent/auxiliary_client.py
index 9f77e631a1..fd14e8ef53 100644
--- a/agent/auxiliary_client.py
+++ b/agent/auxiliary_client.py
@@ -2443,7 +2443,12 @@ def _relay_sync_completion(
     from agent.auxiliary_wire import prepare_chat_messages
 
     kwargs = prepare_chat_messages(client, kwargs)
-    callback = create or (lambda request: client.chat.completions.create(**request))
+    # The progress hook is installed per task, so every attempt for that
+    # task must go through _create_with_progress — including auxiliary
+    # retries and provider fallbacks. Defaulting at this seam covers every
+    # call site that predates the hook or forgets to thread create= through
+    # (18 of 24 today); call sites that pass their own create= keep it.
+    callback = create or (lambda request: _create_with_progress(client, request))
     route = _relay_auxiliary_metadata(provider=provider, api_mode=api_mode)
     # Isolate only the provider callback so the owning thread can unwind its lease/DB
     # transaction on hard cancel without touching the shared client.