Jev vs Clef vs Haiku: Decision Models Cut Cost 25x, Not Errors
Decision models such as Jev cost about 25x less per call than Claude Haiku 4.5 at list price, but trail LLMs on accuracy until you add labels and a calibration fit. Fine-tune if you have labels; cascade Jev into an LLM if you don't.
October 7, 2026 · 15 min read