TypeSafe says Jev "never hallucinates." That claim is

@JaceHall Jace Hall · Sep 19, 2026 · case #511287 · listed via Jev Hub

Still from the clip posted with this case; watch it in the original post on X.

Pointed out that Jev's no-hallucination claim only means outputs stay inside the given schema, not that answers are correct.

The original post

TypeSafe says Jev "never hallucinates." That claim is misleading. What they mean is that the output can't fall outside the schema you gave it. If the choices are A/B/C, you will get A, B, or C. It won't "hallucinate D." That's fine, but it has nothing to do with the answer

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Numbers are a snapshot taken from X when the case was added to the library (schema v1, collected 2026-09-19); they will not match today.

Where this case fits

Filed under classification & data extraction. In the pattern Jev is built for, the model answers a bounded question per step — and ordinary code acts on the answer, because the answer is already a value rather than a paragraph. Other posts in the same family are on the classification & data extraction page.

🗂️ Classification & data extraction