A 144M-parameter System One model on the multilingual mmBERT-small encoder. Takes a state, a question and 2 to 20 options and returns one decision with probabilities for choice, score and yes/no questions, on a CPU.
One of the earliest Jev-shaped scorers. A sequence-classification head on Qwen3.5-4B-Base scores each (state, question, option) triple and softmaxes per question. Non-commercial licence.
Decides
choice, score, noul, classify, route
choice, score, noul, classify
Architecture
julia
scorer
Fine-tuned from
jhu-clsp/mmbert-small
qwen/qwen3.5-4b-base
License
apache-2.0
cc-by-nc-4.0
Availability
Open weights
Open weights
Hosted by
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Input price
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Decision accuracy
73.2%
70.7%
Calibration error
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0.044
Valid action rate
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Median latency
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112 ms
p95 latency
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Evaluation suite
typed-decisions test set (400 cases, 2,000 questions)
Figures are from each model’s manifest; accuracy and latency are what the publishers report, on their own suites and hardware. Add a third model.
Questions
What is the difference between julia-1 and system-one-qwen3-5-4b-scorer?
julia-1 is from Supersonic Labs and system-one-qwen3-5-4b-scorer from pngwn. Both have open weights you can download and run. Both answer choice, score, noul and classify questions. Only julia-1 answers route. julia-1 is the smaller model, at 144M parameters to 4.0B. julia-1 is licensed apache-2.0; system-one-qwen3-5-4b-scorer, cc-by-nc-4.0.
Which is more accurate, julia-1 or system-one-qwen3-5-4b-scorer?
They report on different suites — julia-1 73.2% on typed-decisions test set (400 cases, 2,000 questions), system-one-qwen3-5-4b-scorer 70.7% on author-reported — so the numbers do not rank them. Test both on your own labelled examples.
Which is cheaper, julia-1 or system-one-qwen3-5-4b-scorer?
julia-1: Free (open weights). system-one-qwen3-5-4b-scorer: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run julia-1 or system-one-qwen3-5-4b-scorer locally?
Yes, both: systemone pull supersonic-labs/julia-1 and systemone pull pngwn/system-one-qwen3-5-4b-scorer download the weights.
