mini-jev
mini-jev by r-ms is a decision model: it answers typed questions with a probability for each allowed answer instead of generating text. It scores 25.2 on the Jev Decision Index (rank 114).
Pricing
No hosted price is listed. The weights are open: the cost is your own compute.
Specifications
- Provider
- r-ms
- Parameters
- 4B
- 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
- Qwen/Qwen3-4B-Instruct-2507
- Jev-compatible request
- No
- Runs on CPU
- No
- License
- —
Benchmarks
- Jev Decision IndexECE 0.346
- 25.2
Jev Decision Index: public 21.3, ECE 0.346, Brier 0.726. Lower ECE means its probabilities can be taken at face value.
Speed & latency
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FAQ
How much does mini-jev cost?
mini-jev has no hosted price listed; its weights are open, so the cost is the compute you run it on.
What questions can mini-jev answer?
mini-jev answers choice (one of n options), score (ordered rubric), yes / no questions, returning a probability for each allowed answer.
Is mini-jev well calibrated?
On the Jev Decision Index its expected calibration error (ECE) is 0.346; below about 0.05, a stated 80% confidence is right roughly 80% of the time.
Is mini-jev open weight, and can it run on a CPU?
Yes, mini-jev 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). Pricing is per 1M tokens (USD); confirm with the provider before production use.