Five open Jev replicas worth trying
Chinese X post rounding up five promising open Jev replicas: Laya 421M, Decider-2B, NanoJev 0.6B, Reflex and System-One 4B.
This summary is based on how curated lists describe the project; its README was not available to review.
Overview
This social media post, written in Chinese, rounds up five open decision models the author considers the most promising Jev replicas: Laya 421M, Decider-2B, NanoJev 0.6B, Reflex and System-One 4B. According to the list summary, two of them are Mac-friendly.
It is a quick pointer for people looking for local alternatives to hosted Jev; the post itself and any evaluation behind the picks were not reviewed here.
What the decision model decides
| Type | Question | Answers |
|---|---|---|
| Other | Not applicable: model roundup(inferred) | — |
How it works
- Read the list
- Try the suggested open models locally
- Benchmark them on your own decisions
Strengths
- Short list of open alternatives
- Notes which options are Mac-friendly
Caveats
- List-only; selection criteria unknown
At a glance
- Type
- Discussion
- Status
- discussion
- Has code
- no
- Has tests
- no
Use cases and integrations
How curated lists describe it
X (Chinese): rounds up Laya 421M, Decider-2B, NanoJev 0.6B, Reflex, and System-One 4B as the most promising open decision models, two of which are Mac-friendly.
yibie/awesome-jev
Frequently asked questions
Which models are listed?
Laya 421M, Decider-2B, NanoJev 0.6B, Reflex and System-One 4B.
Do any run on a Mac?
Two are described as Mac-friendly.
Is there a benchmark?
Not in the directory record.
Related projects
Auto-generated write-up of a Reddit post claiming an open RLCD-trained Jev model; content is generic and largely inaccurate.
ProjectPythonHacker News thread on Decision Index 0.2.1, which compared about 70 open reproductions of Jev's decision model.
DiscussiondiscussionX post: a builder reports a small MLP on top of Qwen 4B already reproduces Jev-like decision behaviour.
DiscussiondiscussionShow HN thread announcing an open-source decision model that its authors claim beats TypeSafe Jev.
DiscussiondiscussionHacker News thread about an open-source Jev alternative built on Qwen-2.5-1B with RLCD training.
DiscussiondiscussionList of System One decision models, open implementations, agents, tools, SDKs, baselines and benchmarks, with a sortable web version.
Projectproduction