Jev in production › SDKs and workflow integrations

Jev for Apple Foundation Models

Swift 6 bridge maps Apple Foundation Models @Generable Bool, enum and range types to Jev's noul, choice and score primitives and evaluates them against app state through the Jev API in 40–150ms (author).

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40–150msmeasured, as published by the source
Use
SDKs and workflow integrations
Industry
Developer tools
Form
Open-source tool
Stage
In production
Plugs into
Apple Foundation Models
Listed
2026-09-22
Found via
github
Repository
peterfriese/jev-foundation-models
Stars
99
Forks
3
Last push
2026-10-09
Language
Swift
License
Apache-2.0

The README opens with

A lightweight, native Swift 6 bridge integrating System One decision models into Apple's Foundation Models framework (LanguageModel, LanguageModelExecutor, @Generable).

Evaluate strongly typed @Generable structs and enums against application state in 15–150ms with zero hallucinations, calibrated probabilities, and full Apple Intelligence API compatibility across: - On-Device Core ML (LayaOnDevice): Run Laya's 322M (multilingual mmBERT) and 421M (English/typed-decisions ModernBERT) parameter models locally on the Apple Neural Engine and GPU with zero network calls. - Self-Hosted HTTP (LayaFoundationModels): Connect to laya-serve (PR #31 merged into NandhaKishorM/laya) speaking the Jev-compatible POST /v1/systemone protocol with presets for...

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For the project's own README, linking back here:

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