Jev glossary
Core ConceptsText-only
Text-only input
Jev evaluates strings, JSON objects, and arrays of text; images, audio, and video are not supported and must be pre-processed.
- Category
- Core Concepts
- Also known as
- Text-only
- Reading time
- 1 min
- Related terms
- 3
- Directory entries
- 2
- Docs
- docs.typesafe.ai
- Added
- 2026-09-24
Definition
State must be a string, JSON object, or array of text values. Non-text inputs such as images, audio, video, or binaries need to be converted to text or structured fields before they are sent.
English is the primary training language and where accuracy is best. Other languages, including CJK scripts, are accepted but currently less accurate, so test on your own content and watch confidence when routing.
Tagsapilimitations
Related terms
Definitions that connect to this one.
StateThe content a request asks Jev to evaluate: a string, a named object, or an array of messages, shared by every question in the request.Core ConceptsLanguage supportEnglish is Jev's primary training language; other languages are accepted but less accurate, so test before relying on them.API & ModelsJaggednessThe documented set of jev-1.13 failure modes (literal reading, counting, dates, indirection, context rot), each with a guardrail.Evaluation & Training
From the Jev directory
Directory entries that go deeper on this term.
How to shape what Jev evaluates: a string, a named object, or an array of messages. Every question in a request sees the same state and is evaluated independently.
Jev Practices & PatternsDocs#official#docs#state
Official
The model card for jev-1.13.0: $42 per billion input tokens with free output, a 64k context, 250k tokens per second, and how to list the models your account can call.
Jev Guides & ArticlesDocs#official#docs#models
Official
From the Jev AI model community
Posts from builders shipping with Jev right now.