Jev glossary
PrimitivesOption
Choice option
One key in a Choice criteria map, with a description that can be a string, a structured object, or null.
- Category
- Primitives
- Also known as
- Option
- Reading time
- 1 min
- Related terms
- 5
- Directory entries
- 2
- Docs
- docs.typesafe.ai
- Added
- 2026-09-24
Definition
Each option is a key you choose plus a rubric description. Structured descriptions can say what the option covers, what it is not_for, and a few examples, using the same field names across options so the model can compare them directly. Contrastive wording helps with easily confused options.
Use null when an option's name speaks for itself. The option keys are also the keys of the probabilities map in the answer, so they should be stable identifiers your code can branch on.
Tagsprimitivesdesign
Related terms
Definitions that connect to this one.
ChoicePick one option from a set you define; returns the selected option, a probability for every option, and confidence.PrimitivesCriteriaThe possible answers for a question: a map of options for Choice, an ordered list of levels for Score, or true/false for Noul.PrimitivesNull criteriaPassing null as a Choice option description when the option name needs no extra explanation.PrimitivesStructured instructionsPutting the question in one field and its supporting data, examples, or focus notes in others instead of one long string.PrimitivesPrimitive limitsThe hard caps to design around: 255 Choice options, 2 to 10 Score levels, and a 64k context covering state plus questions.Primitives
From the Jev directory
Directory entries that go deeper on this term.
Pick one option from a set you define. Returns the option, the full probability distribution, and 0-1 confidence, with up to 255 options and parallel questions that barely add latency.
Jev Practices & PatternsDocs#official#primitives#choice
Official
Instructions, option descriptions, score levels, and noul criteria all accept JSON, so you can label question parts, pass schemas and taxonomies, and keep candidate paths alive.
Jev Practices & PatternsDocs#official#primitives#architecture
Official
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