Matt Van Horn frames Jev as the rapid decision layer between slower generative calls: software supplies bounded questions, while a larger model keeps the hard reasoning and writing.
Original by Matt Van HornGetting startedX postOriginal published Source reviewed
Before you dive in
What you’ll find in the original
Treat Jev as “AI multiple choice,” not an essay-writing chatbot.
Use it for actionable decisions such as spam checks, tool selection, and human-review routing.
Reserve a generative model for hard thinking and writing; use Jev for repeated judgment calls between those steps.
Worth knowing
The 200× speed and 400× cost figures are TypeSafe workflow claims repeated by the author, not measurements reproduced here.