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TypeSafe's Jev Costs 400x Less Than an LLM. These 25 Lines of Python Do the Same Job for Free.

Your agent loop has a dirty secret: most of what it does all day is make tiny decisions. Is this input spam? Is this tool call dangerous? Should this ticket go to billing or support? And for every one of those coin-flip decisions, your harness fires up a full frontier LLM, generates a paragraph of…

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  1. 2026-10-01 12:03 · DEV Community — Machine Learning
    TypeSafe's Jev Costs 400x Less Than an LLM. These 25 Lines of Python Do the Same Job for Free.

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  1. Ollama now supports Jev-style decision models — Ollama Blog
  2. autotrust/JEV-27B-VL: first decision model that learned to see without a single image of training — r/LocalLLM
  3. I rebuilt a Jev-style classifier on Qwen3.5-4B: shared-prefix tree, open weights, fine-tunable, ~140 ms on one H100 — r/learnmachinelearning
  4. 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
  5. New frontier AI models, TypeSafe’s Jev AI, & NASA’s IBM collab — Mixture of Experts (IBM)
  6. OpenAI's Jev clone could help the frontier lab stop its swarming agents — TechCrunch AI
  7. LLM or JEV? Why not both? - introducing a hybrid Gemma4 approach — r/LocalLLM
  8. Vev: Jev-like decision models with vision — 4B/9B, local inference, open weights — r/LocalLLM

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