A 2.8 MB byte-level transformer for GUI form filling. For each form element it returns one probability per typed option (fill an entity, check, click or skip), using jevlike's option-attention head.
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.
Decides
choice
choice, score, noul, classify, route
Architecture
cua-s1
kev
Fine-tuned from
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qwen/qwen3.5-4b-base
License
mit
apache-2.0
Availability
Open weights
Open weights
Hosted by
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Input price
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Decision accuracy
100.0%
83.8%
Calibration error
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0.042
Valid action rate
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Median latency
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p95 latency
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Evaluation suite
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 cua-s1-forms and kev?
cua-s1-forms is from Cua and kev from Jared Palmer. Both have open weights you can download and run. Both answer choice questions. Only kev answers score, noul, classify and route. cua-s1-forms is the smaller model, at 706K parameters to 4.0B. cua-s1-forms is licensed mit; kev, apache-2.0.
Which is more accurate, cua-s1-forms or kev?
They report on different suites — cua-s1-forms 100.0% on 196-decision evaluation on real forms, kev 83.8% on transfer-v4 (locked, out of domain) — so the numbers do not rank them. Test both on your own labelled examples.
Which is cheaper, cua-s1-forms or kev?
cua-s1-forms: Free (open weights). kev: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run cua-s1-forms or kev locally?
Yes, both: systemone pull cua/cua-s1-forms and systemone pull jared-palmer/kev download the weights.
