On: GPT-5.1: A smarter, more conversational ChatGPT

[lelele]

Yes, "Custom instructions" work for me, too; the only behavior that I haven't been able to fix is the overuse of meaningless emojis. Your instructions are way more detailed than mine; thank you for sharing.

[next_xibalba → lelele]

The emojis drive me absolutely nuts. These instructions seem to kill them, even though they're not explicitly forbidden.