A clean-room "jevlike" took 451 stars in a day guessing at an unpublished architecture.

jevlike, created September 16, implements one-pass option scoring: every option becomes a query vector, queries attend over context tokens, dot products score option-context pairs, a softmax ranks all options in one forward pass instead of decoding token by token. The author is explicit that TypeSafe hasn't published Jev's design and this is an independent starter with the same input and output shape, reporting 98% on synthetic menus, 26% on Wikispeedia next-click with a frozen Qwen2.5-0.5B encoder, and about 100x faster than small decoders on eight-option tasks. A closed architecture announced two days earlier already has a public approximation with checkpoints. That's the speed of replication now.