zhengxuyu/litjev

What Jev does here

Implements the /v1/systemone endpoint (Choice, Score, Noul) by calculating candidate token log-probabilities without text generation.

Key facts

Category

Research & reimplementation

Stars

47

Forks

10

Language

Python

License

Apache-2.0

Indexed in the Jev community ecosystem directory, data snapshot 2026-11-02.

Frequently asked questions

More in this category

• Mapika/deciderA family of System One-style models fine-tuned from Qwen3.5, designed for one-pass typed decisions with calibrated probabilities.
• wfzyx/vonThe open-source System One decision model. Sub-15ms, non-autoregressive, local drop-in alternative to TypeSafe Jev.
• YannQi/R-4BA 4B open decision model (Reflex-4b): benchmarked at 2-3x faster than Jev with roughly 5% lower accuracy, Apache 2.0.
• kshetrajna12/reflexA small open decision model: state + typed questions → calibrated probabilities, re-created on Qwen3.5.
• ikermoel/open-alternative-jevOpen-source alternative to TypeSafe's Jev: a System One style model layer that gives typed, calibrated decisions from any open-weights LLM in one forward pass (HF + vLLM), with honest benchmarks
• Mapika/decider-2bA 2B open decision model (Decider-2b): benchmarked at ~10x faster than Jev, fully local, roughly 5% lower accuracy.
• r-ms/mini-jevmini-Jev: what a Jev-style typed-decision interface looks like on a frozen Qwen3-4B — read the option letter's logits instead of generating JSON. Preregistered experiment, results, teaching bench.
• zhihz/openjevLocal bilingual probability decisions from context, questions, and candidate answers. Independent research preview inspired by TypeSafe Jev.

See all projects in "Research & reimplementation"