Key takeaways
Flavio Copes' deep dive into TypeSafe's System One model Jev — a smart if inside apps, not a chatbot or coding model. Send state + typed questions (Noul/Choice/Score), get calibrated probabilities in ~100ms at $0.042/M input tokens. Covers vs LLMs/classifiers, question design, confidence gating, routing patterns, failure modes, and rollout.
