TypeSafe's Jev: a model that returns values, not words, and claims it can't hallucinate
AnalysisDiogo Almeida, a co-author of the training method behind ChatGPT, has released Jev through his startup TypeSafe with a large claim: a model that returns typed values instead of free text and, by design, cannot make things up. He argues that hallucination comes from the layer that tunes models to please people, so Jev drops it and forces every answer into a schema, a fixed structure that defines which outputs are allowed. TypeSafe prices it at $42 per billion tokens, against the per-million rates elsewhere, and clocks replies at 70 to 500 milliseconds. Treat the zero-hallucination line with suspicion until production proves it. The bet underneath is sound: for a job with one right shape of answer, a chatty generalist was always overkill.