Jared Palmer Ships 'Kev', an Apache-2.0 Jev-Style Decision Model Family Built on Qwen3.5
Summary
Vercel's Jared Palmer shipped Kev, a family of small 'System 1' decision models (0.8B/4B/9B) built on Qwen3.5 and following TypeSafe's Jev architecture and System One API spec, reaching HN front page at 172 points. Kev returns probability distributions across yes/no, multiple-choice and rating questions while isolating each question's response from the others, and works with TypeSafe's Python SDK. Trained with Devin AI assistance.
Originally reported by github.com
Read the original article →Original headline: Jared Palmer Ships 'Kev', an Apache-2.0 Jev-Style Decision Model Family Built on Qwen3.5