# Good Judgment, Bad Advice: Decision-Model Controllers Raise Agent Cost Without Improving Success

> Source: <https://aiflash.com/news/136517/>
> Published: 2026-10-21 05:30:02+00:00

Agent scaffolds increasingly delegate small decisions (whether to stop, verify, or change approach) to cheaper models. We ask whether a typed decision model, Jev 1.13, consulted only at deterministic decision points, makes a Claude Sonnet 5.5 terminal agent cheaper without making it worse. In a pre-