CHOOSEDevtools & code
Kev-0.5B: A Tiny Open-Source Jev-like Decision Model
shipfrontier@shipfrontierai
Kev-0.5B is a small, open-source decision model that utilizes LoRA and a readout head on Qwen2.5-0.5B, featuring a TypeSafe-compatible API for parallel typed questions with learned probabilities, and operates without decoding.
⚖️ Kev-0.5B: a tiny open-source Jev-like decision model — LoRA plus readout head on Qwen2.5-0.5B, TypeSafe-compatible API, one prefill pass, no decoding, per repo.
Parallel typed questions with learned probabilities (ECE 0.065); trains in ~1h45m on a MacBook, serves in ~160ms. Honestly caveated: near Jev in-distribution yet -19pp out-of-domain. Weights on HF plus GitHub release.
github.com/jaredpalmer/kev