Just a few days after Jev's release, the open-source

@xiaomovps 小墨同学 · Sep 18, 2026 · case #818177 · listed via Jev Hub

Still from the clip posted with this case; watch it in the original post on X.

Listed five open-source Jev replications, including Laya 421M, Decider-2B, NanoJev 0.6B, Reflex, and System-One 4B.

The original post, translated

Just a few days after Jev's release, the open-source community has already started frantically replicating it🔥 The five most recommended models: 1. Laya 421M: native decision model, supports Mac 2. Decider-2B: most like Jev, based on Qwen3.5 3. NanoJev 0.6B: dedicated Decision Head 4. Reflex: Qwen3.5 + Direct Logits 5. System-One 4B: specialized in probability calibration

Show the original post in its source language ▾

Jev 发布没几天，开源社区已经开始疯狂复刻了🔥 最值得推荐的五个模型： 1、Laya 421M：原生决策模型，支持 Mac 2、Decider-2B：最像 Jev，基于 Qwen3.5 3、NanoJev 0.6B：专门的 Decision Head 4、Reflex：Qwen3.5 + Direct Logits 5、System-One 4B：专门做概率校准

The post above is a machine translation from zh; the untranslated text is in the fold-out.

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Where this case fits

Filed under coding & developer tools. In the pattern Jev is built for, the model answers a bounded question per step — and ordinary code acts on the answer, because the answer is already a value rather than a paragraph. Other posts in the same family are on the coding & developer tools page.

🛠️ Coding & developer tools