A customer wants to replace their LLM ticket classifier with Jev to cut cost. What changes, and what do you verify before switching?
The cheap swap is not a model swap. The prompt becomes atomic typed questions, the parsed label becomes a distribution with a confidence, and the release gate becomes a per-version threshold sweep on the customer's own labeled tickets.
Updated Sep 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
The cheap swap is not a model swap. The prompt becomes atomic typed questions, the parsed label becomes a distribution with a confidence, and the release gate becomes a per-version threshold sweep on the customer's own labeled tickets.
Lead with where the obvious approach breaks, because that is the judgment they are screening for — most candidates jump straight to the happy path and lose the room.
Then walk the failure back through the pipeline in order, naming the one metric the customer's exec sponsor actually cares about before you propose the fix.
