This is the voice model, which doesn’t have any «thinking» or «reasoning» phase. It’s a useful model for questions that aren’t intended to trick the model.

I’ve used it for live translation with great success. It tends to start ignoring the original instructions after 20 min, so you have to start a new conversation if you don’t want it to meddle in the conversation instead of just transferring.

The text-only model with reasoning (both of opus 4.6, gpt 5.2) can be tricked with this question. Note: you might have to try it multiple times as they are not deterministic. But I managed to get a failing result right away on both.

Also note, some model may decide to do a web search, in which case they just likely find this "bug".