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jev-ettin-400m-20261013-v0

ElfsongDecision modelOpen weights

jev-ettin-400m-20261013-v0 by Elfsong is a decision model: it answers typed questions with a probability for each allowed answer instead of generating text. It scores 15.2 on the Jev Decision Index (rank 200).

Pricing

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

Specifications

Provider
Elfsong
Parameters
400M
Released
Oct 2026
Open weights
Yes
Question types
Choice (one of N options), Score (ordered rubric), Yes / no
Mechanism
Other
Backbone
—
Jev-compatible request
Yes
Runs on CPU
Yes
License
—
Hugging Face
Elfsong/jev-ettin-400m-20261013-v0

Benchmarks

Jev Decision IndexECE 0.090
15.2

Jev Decision Index: public 14.1, ECE 0.090, Brier 0.635. Lower ECE means its probabilities can be taken at face value.

Self-reported by the publisher

The model's own claims, often on its own sets or a self-run copy of a public suite. Not independently verified and never ranked alongside measured results.

Jev Decision Index public suite (self-run)Self-reportedDecision Index public balanced skill, edition 0.3 kit (release-v3), self-run
14.1

Speed & latency

Median latency per call (Decision Index)
16 ms

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FAQ

How much does jev-ettin-400m-20261013-v0 cost?

jev-ettin-400m-20261013-v0 has no hosted price listed; its weights are open, so the cost is the compute you run it on.

What questions can jev-ettin-400m-20261013-v0 answer?

jev-ettin-400m-20261013-v0 answers choice (one of n options), score (ordered rubric), yes / no questions, returning a probability for each allowed answer.

Is jev-ettin-400m-20261013-v0 well calibrated?

On the Jev Decision Index its expected calibration error (ECE) is 0.090; below about 0.05, a stated 80% confidence is right roughly 80% of the time.

Is jev-ettin-400m-20261013-v0 open weight, and can it run on a CPU?

Yes, jev-ettin-400m-20261013-v0 has open weights. It is small enough to run on a CPU.

Data as of 2026-10-26. Source: Metatext decision-model catalogue, 2026-10-14 (Hugging Face). Pricing is per 1M tokens (USD); confirm with the provider before production use.