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.
Upstage's structured decision model, a System One endpoint on Solar Mini 4. Returns a choice, a score or a yes/no answer with a probability read from the model, in one forward pass, on the same /v1/systemone schema as Jev.
Decides
choice
choice, score, noul, classify, route
Architecture
cua-s1
solar
Fine-tuned from
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License
mit
proprietary
Availability
Open weights
Hosted API
Hosted by
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Upstage
Input price
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$0.10/MTok
Decision accuracy
100.0%
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Calibration error
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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 solar-decide?
cua-s1-forms is from Cua and solar-decide from Upstage. cua-s1-forms has open weights you can download and run; solar-decide is only available as a hosted API. Both answer choice questions. Only solar-decide answers score, noul, classify and route. cua-s1-forms is licensed mit; solar-decide, proprietary.
Which is more accurate, cua-s1-forms or solar-decide?
Only cua-s1-forms publishes an accuracy figure (100.0% on 196-decision evaluation on real forms); solar-decide does not, so there is no comparison to make without your own test.
Which is cheaper, cua-s1-forms or solar-decide?
cua-s1-forms: Free (open weights). solar-decide: $0.1 / $0 per 1M. Open weights cost nothing per call beyond your own hardware.
Can I run cua-s1-forms or solar-decide locally?
cua-s1-forms yes — systemone pull cua/cua-s1-forms downloads its weights. The other is only served as a hosted API.
