open-spark-jev
Local System One models on Qwen3, for an NVIDIA DGX Spark.
Abhishek Rai’s open re-creation of the idea behind Jev, trained on Qwen3 and meant to run on the desk rather than through an API.
# Open Spark Jev <p align="center"> <img src="docs/assets/nokast-logo.png" alt="Nokast" width="72" /> <br /> <sub>Part of <b>Nokast</b>, an open-source AI community</sub> </p> <p align="center"> <strong>An open-source, local implementation inspired by TypeSafe's Jev and System One models, built for NVIDIA DGX Spark. The model is called <code>spark-s1</code>.</strong> </p> <p align="center"> <b>State in. Structured decisions out.</b> </p> <p align="center"> <a href="docs/ARCHITECTURE.md"><img src="https://img.shields.io/badge/Architecture-how%20it%20works-2a78d6?style=for-the-badge" alt="Architecture" /></a> <a href="docs/EVALUATION.md"><img src="https://img.shields.io/badge/Evaluation-how%20we%20measure-eb6834?style=for-the-badge" alt="Evaluation" /></a> </p> <p align="center"> <a href="https://huggingface.co/abhishek085/spark-s1-4b-v3"><img src="https://img.shields.io/badge/spark--s1--4b--v3-Hugging%20Face-FFD21E?style=for-the-badge&logo=huggingface&logoColor=black&labelColor=1f2328" alt="spark-s1-4b-v3 on Hugging Face" /></a> <a href="https://huggingface.co/abhishek085/spark-s1-1.7b-v3"><img src="https://img.shields.io/badge/spark--s1--1.7b--v3-Hugging%20Face-FFD21E?style=for-the-badge&logo=huggingface&logoColor=black&labelColor=1f2328" alt="spark-s1-1.7b-v3 on Hugging Face" /></a> </p> --- ## What is Open Spark Jev? **Open Spark Jev** is an independent, open-source implementation inspired by TypeSafe's Jev and System One, built for local inference on NVIDIA DGX Spark; it is not Jev, not a reproduction of TypeSafe's proprietary system, and not affiliated with TypeSafe. It is for decisions that need a fast, structured answer rather than generated text, such as routing, urgency, tool-call safety, or whether an agent should continue, stop or ask