JEV Decision Framework Cuts AI Coding Costs by 69 Percent with Opus 5.5

Claude Opus 5.5 alone is powerful, but pairing it with TypeSafe's JEV decision model can dramatically cut costs. New patterns from developers show that when JEV handles four critical layers—context selection, task routing, error recovery, and test scheduling—AI coding workloads drop costs by 68.8 percent while maintaining code quality.