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Claude Mythos Preview shows massive performance jump over Opus 4.6

This is beyond insanity. That jump is nuts. Opus 4.6 was released a few months ago. Look at that jump!! I am shocked Alex Albert (@alexalbert__) We released Claude Opus 4.6 just two months ago. Today we're sharing some info on our new model, Claude Mythos Preview. — https://nitter.net/alexalbert__/status/2041579938537775160#m

→ View original post on X — @kimmonismus, 2026-04-07 18:20 UTC