CalibratedDecisions.

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system-one-gemma

Open-source Jev-style System One decision model.

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From the repository

Open-source Jev-style System One decision model. Gemma 3 270M with a scoring head — fast, calibrated decisions in a single forward pass. No text generation. Inspired by TypeSafe.ai's Jev.

calibrationdecision-modelgemmajevloramachine-learningscoring-modelsystem-onetransformerstypesafe-ai

How builders describe it

Open-source Jev-style System One decision model. Gemma 3 270M with a scoring head — fast, calibrated decisions in a single forward pass. No text generation. Inspired by TypeSafe.ai's Jev.
Open-source System One scorer built on Gemma 3 270M with LoRA, where each option is scored in one batched forward pass and softmaxed into probabilities for choice, yes/no and ordered-scale questions.

The decision Jev makes

Benchmark questions with known answers, to check accuracy and confidence.

Where it fits

Head-to-head tests, calibration studies and independent research into how well Jev decides, how fast, and at what cost. All 682 benchmarks & research projects →

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