diff --git a/agent/agent_runtime_helpers.py b/agent/agent_runtime_helpers.py
index a418088916a95..acdcfdb8855ae 100644
--- a/agent/agent_runtime_helpers.py
+++ b/agent/agent_runtime_helpers.py
@@ -2872,7 +2872,7 @@ def sanitize_api_messages(messages: List[Dict[str, Any]]) -> List[Dict[str, Any]
                 if cid:
                     seen_assistant_call_ids.add(cid)
                 kept_tcs.append(tc)
-            if len(kept_tcs) != len(msg.get("tool_calls") or []):
+            if kept_tcs:
                 msg = {**msg, "tool_calls": kept_tcs}
             deduped.append(msg)
         elif role == "tool":
diff --git a/agent/transports/chat_completions.py b/agent/transports/chat_completions.py
index 086883eca1c70..e5daeb56a4949 100644
--- a/agent/transports/chat_completions.py
+++ b/agent/transports/chat_completions.py
@@ -23,7 +23,7 @@ def _reasoning_config_for_model(model: str, reasoning_config: dict | None) -> di
     if not isinstance(reasoning_config, dict):
         return reasoning_config
     if (
-        "gpt-5.6" in (model or "").lower()
+        ("gpt-5.6" in (model or "").lower() or "glm-" in (model or "").lower())
         and str(reasoning_config.get("effort") or "").strip().lower() == "ultra"
     ):
         normalized = dict(reasoning_config)