Yes / No is a free web tool at yesno.coderai.dev and a hands-on demo of Jev by TypeSafe AI. You type any question and get one clear answer: Yes, No or Maybe.

What is Jev by TypeSafe AI?

Jev is the first System One model from TypeSafe AI, an AI lab building machine-native intelligence for automation. Instead of writing prose, Jev makes quick decisions inside software: it returns how likely each answer is. Yes / No calls the jev-latest model through TypeSafe's System One API.

Can I test Jev for free?

Yes. Yes / No is a free Jev demo with no account or API key: type a question and see Jev's decision in seconds. For API access to Jev, visit typesafe.ai, where the model is offered in early access.

How does Yes / No decide the answer?

Jev estimates how likely the answer is Yes. Below 45% the answer is No and above 55% it is Yes. Between 45% and 55%, it is Maybe no below 50%, Maybe yes above 50%, and Maybe at exactly 50%. Answers are never random.

Does Yes / No use current information?

Yes. When a question depends on fresh facts, such as tomorrow's weather, Yes / No runs a live Google search and asks Jev again with the results. The page says when web search was used, or when it could not be checked.

Is Yes / No free and private?

It is free and needs no account. Questions are not stored or logged by the application. A secure cookie remembers browser verification for 30 minutes. Fair-use limits apply: 100 questions per hour and 1,000 per day.

Less overthinking. More knowing.

Yes/No

Two possibilities. (Okay, maybe three.)

A little clarity, explained

What is Yes / No?: A free web tool and a hands-on demo of Jev by TypeSafe AI: type any question and get one clear answer — Yes, No or Maybe.
What is Jev by TypeSafe AI?: Jev is the first System One model from TypeSafe AI, an AI lab building machine-native intelligence for automation. Instead of writing prose, Jev makes quick decisions inside software: it returns how likely each answer is. Yes / No calls jev-latest through TypeSafe’s System One API.
Can I test Jev for free?: Yes. This is a free Jev demo with no account or API key: type a question and see Jev’s decision in seconds. For API access to Jev, visit typesafe.ai, where the model is offered in early access.
How is the answer decided?: Jev estimates how likely the answer is Yes. Below 45% it’s No and above 55% it’s Yes. Between 45% and 55%, it’s Maybe no below 50%, Maybe yes above 50%, and Maybe at exactly 50%. Answers are never random.
Does it know what’s happening now?: When a question depends on fresh facts — like tomorrow’s weather — it runs a live Google search and asks Jev again with the results. The page tells you when web search was used, or when it couldn’t be checked.
Is it free and private?: Free, with no account. The app doesn’t store or log your questions. A secure cookie remembers browser verification for 30 minutes. Fair-use limits apply: 100 questions per hour and 1,000 per day.