牛逼!Jev 刚火没两天,已经有人搞了个开源的Jev🤣

This is a AI post classified by Jev as Open & local models (a model release), kept by the AI Radar because it carries real work, not commentary.
牛逼!Jev 刚火没两天,已经有人搞了个开源的Jev🤣 @bespokelabsai 发布了一个开源版的Jev:Bespoke Nimble。 更离谱的是,整个项目是基于 Qwen3.5-9B ,只花了大约两天。 数据、模型权重、训练配方、推理代码全部公开,而且没有从 Jev 蒸馏,只拿 Jev 做评测参照。 最终方法是在 Qwen3.5-9B 上做了一次很轻量的 LoRA微调。 只用了2676 条训练数据,结果在他们自己的 324 条 held-out 测试集上拿到了90.12%,而原版的Jev是93.21%。 一个 9B 模型,已经做到距离 Jev 只差 3 个百分点。 但我觉得最值得看的不是这个分数,而是他们到底怎么训的。 核心方法叫 contrastive data curation。 简单说,他们会构造两个几乎完全一样的样本,只修改一个足以改变最终决策的关键事实,让正确答案发生翻转。 模型因此被迫学会一件事: 到底哪条证据,才真正应该改变决策。 这其实特别符合 Jev 这类模型的用途。 它本来就不是拿来陪你聊天的,而是塞进 Agent 和软件系统里,做路由、审核、打分、策略判断这些高频的小决策。 推理方式上Nimble 不生成 CoT,甚至不生成 JSON。 它直接读取候选答案 token 的 logits,再把它们转成概率,最后由程序拼成
Posted by Max For AI (39.4k followers) 10 h ago · 322 likes · 37.8k views · view the original post on X. Kept by the AI Radar as Open & local models. Tools mentioned: nimble, bespoke-nimble-9b.
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Every post is read and classified by Jev (TypeSafe): what it is, which market it belongs to, and whether the link is a real tool. 27.2k posts from 4.8k X accounts over the last 14 days, 1.2k tools, 19 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-19 18:45 UTC. Full method.