It makes no good sense to evaluate models we don't have access to. For all we know K3 was competitive back then too. Or maybe there's a K4 in the works that blows everything out of the water. Who knows and who cares. There's no way for us to compare

Mythos Preview was also priced at $125/million token output. Completely different pricing class.

I wonder if Fable now is actually better than the Mythos in March and if it's actually the same model. Could just be more Anthropic shenanigans.