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Decision models are English-first. I measured them in Japanese, then built one.

What happens to System One decision models outside English: a position prior in Laya, an open Japanese model, a translated benchmark, and what transfers back to English. Decision models had a big September. TypeSafe AI shipped Jev and called it the first "System One" model. Liquid AI followed with…

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  1. 2026-10-01 02:21 · DEV Community — Machine Learning
    Decision models are English-first. I measured them in Japanese, then built one.

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  1. Ollama now supports Jev-style decision models — Ollama Blog
  2. I rebuilt a Jev-style classifier on Qwen3.5-4B: shared-prefix tree, open weights, fine-tunable, ~140 ms on one H100 — r/learnmachinelearning
  3. Trained locally: ultra-fast 0.8B/2B System 1 decision models that match Jev on benchmarks and Doom, ~30 ms per decision (open weights) — r/LocalLLaMA
  4. OpenAI's Jev clone could help the frontier lab stop its swarming agents — TechCrunch AI
  5. LLM or JEV? Why not both? - introducing a hybrid Gemma4 approach — r/LocalLLM
  6. Anyone trying to use nuzlocke data to train RL environments? — r/reinforcementlearning
  7. Why Dwarkesh is Wrong about Computer Use + How OpenAI shipped its Jev competitor in 1 Week — Latent Space
  8. Gliner2.5-Decide (Jev style model) — r/LocalLLaMA

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