> I think we have a winner...

It makes me sad that the complete and total lack of an objective way to measure these products means that the coming decades will be filled with this kind of hyper-specific gotcha test made in inappropriately confident internet posts.

Literally this could have been down to one extra book in someone's training corpus, or a tokenizer that failed to understand λ as a non-letter. But no matter, "we have a winner!". It's the computer science equivalent of declaring global warming a fraud because it snowed last night.