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LitJev

A reproduction of Jev that turns any Qwen checkpoint into a decision model serving the same /v1/systemone schema (Choice, Score, Noul), with no training and no generated answer text.

Open github.comzhengxuyu/litjev
Category
Repos & SDKs
Published by
Community
Author
zhengxuyu
Added
2026-09-22
Tagscommunitypythonopen-modelsclassificationqwen

Highlights

  • Serves POST /v1/systemone with the same model, state, and questions body and the same choice, score, and noul question types as the hosted API.
  • Scores are read directly from the model's output head, so no answer text is generated, and up to ten questions fit in one request.
  • Default checkpoint is Qwen/Qwen3.8-27B on one H100 80 GB; vision checkpoints are required for screenshot decisions.
  • Probabilities are not calibrated by default, and confidence values differ from the hosted Jev service.

Quickstart

bash
git clone https://github.com/zhengxuyu/litjev.git
cd litjev
uv run --locked litjev --model Qwen/Qwen3.8-27B

Watch out

Apache-2.0 for original code with adapted examples under MIT. Needs uv, a local GPU, and a Qwen checkpoint; not affiliated with or endorsed by TypeSafe AI.

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