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Winnow-12B

EldanRingDecision modelOpen weights

Winnow-12B by EldanRing is a decision model: it answers typed questions with a probability for each allowed answer instead of generating text. It scores 49.3 on the Jev Decision Index (rank 47).

Pricing

No hosted price is listed. The weights are open: the cost is your own compute.

Specifications

Provider
EldanRing
Parameters
12B
Released
Sep 2026
Open weights
Yes
Question types
Choice (one of N options), Score (ordered rubric), Yes / no
Mechanism
Decoder LM with a decision readout
Backbone
google/gemma-4-12B
Jev-compatible request
Yes
Runs on CPU
No
License
apache-2.0
Hugging Face
EldanRing/Winnow-12B

Benchmarks

Jev Decision IndexECE 0.168
49.3
DecisionBenchECE 0.142
0.766

Jev Decision Index: public 50.7, ECE 0.168, Brier 0.486. Lower ECE means its probabilities can be taken at face value.

Speed & latency

Median latency per call (Decision Index)
73 ms

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FAQ

How much does Winnow-12B cost?

Winnow-12B has no hosted price listed; its weights are open, so the cost is the compute you run it on.

What questions can Winnow-12B answer?

Winnow-12B answers choice (one of n options), score (ordered rubric), yes / no questions, returning a probability for each allowed answer.

Is Winnow-12B well calibrated?

On the Jev Decision Index its expected calibration error (ECE) is 0.168; below about 0.05, a stated 80% confidence is right roughly 80% of the time.

Is Winnow-12B open weight, and can it run on a CPU?

Yes, Winnow-12B has open weights. It needs a GPU to run at useful speed.

Data as of 2026-10-14. Source: Metatext decision-model catalogue, 2026-10-14 (Jev Decision Index, DecisionBench, Enterprise Decision Arena, Benchmark Heaven JevBench). Pricing is per 1M tokens (USD); confirm with the provider before production use.