TypeSafe AI Launches Jev, a Decision-Only AI Model That Never Generates Text

San Francisco startup TypeSafe AI emerged from stealth on September 15, 2026, unveiling a model called Jev and a new category it terms 'System One models.' Unlike conventional large language models, Jev does not generate text; instead, it accepts a block of input and a set of predefined questions, then returns a scored answer for each question in a single fast pass. The model is designed for high-volume, low-cost classification and decision-making tasks embedded inside software pipelines. TypeSafe draws its conceptual framing from psychologist Daniel Kahneman's distinction between fast intuitive judgment and slow deliberate reasoning, arguing that most software decisions fall into the former category. The company, founded by Diogo Almeida, is betting that drastically reducing the cost per decision will unlock entirely new categories of AI-assisted logic that were previously too expensive to automate.