I'll use the model picker as it looks like on December 28, 2024 (Eastern time) from a new, empty chat. Different models will roll out to different people at different times, so what I see will count. I won't bet on this question.

Here's what the current model picker looks like:

Clarifications:

• Models hidden behind "More models" do not count

• Unless otherwise stated, model names need to match up to case, punctuation, and spacing. So o1-mini doesn't count for o1, but O1 or o-1 would.