diff --git a/letta/agents/helpers.py b/letta/agents/helpers.py
index 42257436..7f001176 100644
--- a/letta/agents/helpers.py
+++ b/letta/agents/helpers.py
@@ -222,6 +222,7 @@ def _safe_load_tool_call_str(tool_call_args_str: str) -> dict:
             # Load it again - this is due to sometimes Anthropic returning weird json @caren
             tool_args = json.loads(tool_args)
     except json.JSONDecodeError:
+        logger.error("Failed to JSON decode tool call argument string: %s", tool_call_args_str)
         tool_args = {}
 
     return tool_args
diff --git a/letta/schemas/providers/openai.py b/letta/schemas/providers/openai.py
index c01a9542..c3810255 100644
--- a/letta/schemas/providers/openai.py
+++ b/letta/schemas/providers/openai.py
@@ -142,7 +142,7 @@ class OpenAIProvider(Provider):
         """This function is used to tune LLMConfig parameters to improve model performance."""
 
         # gpt-4o-mini has started to regress with pretty bad emoji spam loops (2025-07)
-        if "gpt-4o-mini" in model_name or "gpt-4.1-mini" in model_name:
+        if "gpt-4o" in model_name or "gpt-4.1-mini" in model_name:
             llm_config.frequency_penalty = 1.0
         return llm_config