Jev launches: a System One model for decisions
TypeSafe founder Diogo Almeida introduces Jev, its RLCD training method, and its focus on software decisions. The post includes a 2:56 launch video.

Built by ex-OpenAI researchers, JEV is TypeSafe's "System 1" AI model designed to handle simple branching decisions instead of large LLMs, avoiding high latency and token costs.
Stop using 70B LLMs as glorified if-else statements. Every time your app asks GPT-6 or Claude to make a simple 3-way decision, your users wait 8.5 seconds and your token bill blows up. Meet JEV from @typesafeai : the "System 1" AI model built by ex-OpenAI researchers to give