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Decision modelEarly access

Jev

TypeSafe AI

Released
September 15, 2026
Data date
September 21, 2026
Model class
System One model
Result
Choice and Score with probabilities and confidence, Noul as a value from 0 to 1
Access
API
Input price
$0.042
Per 1M input tokens

Jev is TypeSafe AI’s first publicly available System One checkpoint, built for decisions inside software. You send an unstructured state and typed questions. Choice and Score return probabilities and confidence; Noul returns the probability that a statement is true. That lets an application route, rate, or branch a workflow without parsing generated prose.

Jev runs through the jev-latest API model ID and remains in early access. Because the checkpoint emits no answer tokens, text composition is outside its intended use.

Specifications and access

SpecificationValue and source
Access
APISource
Model class
System One modelSource
API model ID
jev-latestSource
Result
Choice and Score with probabilities and confidence, Noul as a value from 0 to 1Source
Output charge
No separate output chargeSource
Notes
System One model for typed decisions. Jev does not generate free-form text.Source