An open family of System One models. A LoRA adapter plus a pointer head on a frozen Qwen base returns a distribution per typed question in one forward pass, serves TypeSafe's /v1/systemone contract, and ships a fitted temperature with every checkpoint.
StartLux's decision family in five sizes, 0.8B to 27B. All questions in a request are answered in one forward pass, with a probability for every option, through a TypeSafe /v1/systemone-compatible server that records CUDA graphs for short requests.
Decides
choice, score, noul, classify, route
choice, score, noul
Architecture
kev
startlux-decision
Fine-tuned from
qwen/qwen3.5-4b-base
—
License
apache-2.0
cc-by-nc-4.0
Availability
Open weights
Open weights
Hosted by
—
—
Input price
—
—
Decision accuracy
83.8%
88.3%
Calibration error
0.042
—
Valid action rate
—
—
Median latency
—
26 ms
p95 latency
—
—
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 kev and startlux-decision?
kev is from Jared Palmer and startlux-decision from StartLux. Both have open weights you can download and run. Both answer choice, score and noul questions. Only kev answers classify and route. kev is the smaller model, at 4.0B parameters to 4.7B. kev is licensed apache-2.0; startlux-decision, cc-by-nc-4.0.
Which is more accurate, kev or startlux-decision?
They report on different suites — kev 83.8% on transfer-v4 (locked, out of domain), startlux-decision 88.3% on JevBench public set (231 items; 204 correct), maker's run — so the numbers do not rank them. Test both on your own labelled examples.
Which is cheaper, kev or startlux-decision?
kev: Free (open weights). startlux-decision: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run kev or startlux-decision locally?
Yes, both: systemone pull jared-palmer/kev and systemone pull startlux/startlux-decision download the weights.
Evaluation suite
transfer-v4 (locked, out of domain)
JevBench public set (231 items; 204 correct), maker's run
