2026-09-15 · news · launch

TypeSafe Jev: a model that cannot hallucinate because it cannot write

Jev skips string generation entirely — unstructured state in, typed probabilistic decisions out, 70–500ms, output tokens free. No text means no hallucination surface. A week after launch it went GA; Vercel's own paid-team stats put AI Gateway coverage at 27.8%. TypeSafe's workflow scores are self-reported, with no independent audit; the founder says they can't prove pricing isn't subsidized; Vercel tells developers to calibrate the returned probabilities on their own labeled samples first. TypeSafe's listed weak spots are counting, numeric ops, and date comparison — leave those to code.