Dev builds a model router that sends small Claude Code tasks to a cheaper model
TechPreacher · x · 2026-10-28
Sascha Corti details wiring TypeSafe's Jev model into Claude Code as a router: Jev sizes up each message and routes small jobs to a smaller, cheaper Claude model. Jev is a "System One" model that doesn't generate text — it answers typed questions (choice/score/noul) with probabilities and confidence, at 300–600ms round trip and $0.042 per million input tokens with free output. The post covers the design rationale, how Jev fits in, and what still needs work.
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