In my app, users are greeted with some personalized content from the assistant. I’m wondering which would be more effective: adding information about the user in the additional_instructions field of the run creation request body or simply appending it to the initial user message that I send automatically to kick off this greeting message (this first message is always hidden to the user).
Is there any reason one should work much better than the other? Do they do substantially different things under the hood?
I’m tempted to just append the info to the start message for simplicity.