Why I couldn't build Jev at OpenAI — Diogo Almeida, TypeSafe Co-founder & CEO

Jev represents a shift toward "System One" models designed for programmatic consumption rather than human-facing chatbots. By prioritizing intelligence-per-dollar and reliability, these models integrate directly into software workflows, enabling the automation of rote, economically valuable tasks that current reasoning-heavy models struggle to handle consistently. Unlike traditional RLHF-tuned models, which often suffer from mode collapse and sycophancy, Jev focuses on calibrated, robust outputs that serve as reliable infrastructure. The development philosophy emphasizes data quality over sheer compute, treating AI as a database-like utility rather than a conversational coworker. This approach aims to move beyond the "AI winter" of over-promised, under-delivered automation by providing developers with predictable, composable tools that function as stable dependencies in complex software systems.