Yes / No — Free Jev Demo

The page states it calls jev-latest through TypeSafe's System One API and returns Yes, No or Maybe. The one addition is a live Google search for questions depending on current facts, after which it asks Jev again with those results and tells you when search was used or could not check. So for time-sensitive questions you are reading Jev plus retrieved text.

The band belongs to the demo, not the model. The page gives the cutoffs: below 45% reads No, above 55% reads Yes, and everything between is Maybe, split into Maybe no below 50%, Maybe yes above 50% and Maybe at exactly 50%. Answers are never random by design, so the Yes/No line is a product decision you could move.

The demo states it stores and logs nothing, needs no account or API key, and uses a secure cookie to remember browser verification for 30 minutes. Fair-use limits are 100 questions per hour and 1,000 per day, with a 1,000 character cap. It is a third-party build from coderai.dev, not an official TypeSafe page.

Not really. It returns one number per question with no explanation, no per-option probabilities and no view of the typed question that was sent, so a wrong answer cannot be traced to a badly worded question or a bad judgment. Treat it as a way to feel latency and interface; for accuracy, run your own labelled set through the API.

No. It is a third-party demo from coderai.dev, powered by Jev from TypeSafe, and it points visitors to typesafe.ai for actual API access. So it is an independent showcase of the model rather than an official tool, which matters if you want support, guarantees or an SLA behind it.

It runs a short browser-verification step, shown as preparing verification with a retry, then remembers it with a secure cookie for thirty minutes. That is bot and abuse control for a free public endpoint rather than part of the model call, and if the check cannot complete the tool cannot ask Jev at all.

Yes. After an answer the page offers share buttons for X and LinkedIn plus copy-link and share-link actions. Because the tool stores nothing and needs no account, a shared link is the only record of a question unless you copy the question and result yourself.