So I’m working on a LangChain Agent, and for that when I’m using gpt-4.1 as LLM in Agent, the Agent is not invoking any tools, but when I keep everything(prompts, tools, etc.) same and just change the model to gpt-4.1-mini, Agent behaves as expected it invokes tools. but I want that same from gpt-4.1. Is this issue is from my side or from OpenAI’s side.