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.
A Gemma 4 12B fine-tune for typed decisions that also chats and reads images. Ships as GGUF for llama.cpp, holds a 64K context on a 16 GB GPU, and serves /v1/systemone next to /v1/chat/completions.
Decides
choice, score, noul, classify, route
choice, score, noul, classify, route
Architecture
solar
winnow
Fine-tuned from
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google/gemma-4-12b-it
License
proprietary
apache-2.0
Availability
Hosted API
Open weights
Hosted by
Upstage
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Input price
$0.10/MTok
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Decision accuracy
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85.7%
Calibration error
—
—
Valid action rate
—
—
Median latency
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143 ms
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 solar-decide and winnow?
solar-decide is from Upstage and winnow from EldanRing. solar-decide is only available as a hosted API; winnow has open weights you can download and run. Both answer choice, score, noul, classify and route questions. solar-decide reads up to 512K tokens of state, against 64K tokens for winnow. solar-decide is licensed proprietary; winnow, apache-2.0.
Which is more accurate, solar-decide or winnow?
Only winnow publishes an accuracy figure (85.7% on JevBench public subset (231 items), Q8_0); solar-decide does not, so there is no comparison to make without your own test.
Which is cheaper, solar-decide or winnow?
solar-decide: $0.1 / $0 per 1M. winnow: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run solar-decide or winnow locally?
winnow yes — systemone pull eldanring/winnow downloads its weights. The other is only served as a hosted API.
