Jev, a 'System One' Decision Model, Debuts in Beta on OpenRouter

OpenRouter 1 hour ago

Key Info

Jev, a new "System One" model from Typesafe AI, is now available in beta on OpenRouter. Instead of generating text, it takes your app's state plus a typed question and returns a typed decision with an associated probability.

Highlights

No JSON prompting, parsing layer, or validation needed: the model returns structured decisions directly.
Responses include confidence, e.g., asking which queue a ticket belongs to returns "billing 84%, technical 16%" rather than just "billing".
Supports questions such as yes/no (returned as a probability, e.g., "Is this customer about to churn?") and choice from a set you define.
Multiple questions about the same input can be asked in a single call.

Original post

RT @alexatallah: Jev is a model that efficiently makes */decisions* This is a huge devex win for AI. As a team that believes in ruthless type checking, being able to expand this love to our classifiers and decision making processes means 100x more AI usage. The quintessential Jevons paradox model

Quoted post

Jev by @typesafeai is now on OpenRouter, in beta. Jev is a System One model. Instead of generating text, it takes your app's state plus a typed question and returns a typed decision with a probability attached. There is no JSON prompting, parsing layer, and nothing to validate against.

#Jev#OpenRouter#decision model

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