Ultra-small English encoders (17M, 68M and 395M) fine-tuned from Ettin rerankers. Each answers choice, noul and score questions with a probability per candidate and no generated text. Experimental v0 by one developer; the weights have no licence assigned yet.
StartLux's decision family in six sizes, 0.8B to a 35B-A3B mixture of experts. All questions in a request are answered in one forward pass, with a probability for every option, through a TypeSafe /v1/systemone-compatible server. Text, JSON or images, up to 256K tokens.
Decides
choice, noul, score
choice, score, noul
Architecture
bekko
startlux-decision
Fine-tuned from
cross-encoder/ettin-reranker-400m-v1
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License
Unassigned: the weights licence is not finalised (treated as non-commercial); training code MIT
cc-by-nc-4.0
Availability
Open weights
Open weights
Hosted by
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Input price
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Decision accuracy
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88.3%
Calibration error
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Valid action rate
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Median latency
5 ms
26 ms
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 bekko-system-one and startlux-decision?
bekko-system-one is from Yuichi Tateno (hotchpotch) and startlux-decision from StartLux. Both have open weights you can download and run. Both answer choice, noul and score questions. bekko-system-one is the smaller model, at 395M parameters to 4.7B. bekko-system-one is licensed other; startlux-decision, cc-by-nc-4.0.
Which is more accurate, bekko-system-one or startlux-decision?
Only startlux-decision publishes an accuracy figure (88.3% on JevBench public set (231 items; 204 correct), maker's run); bekko-system-one does not, so there is no comparison to make without your own test.
Which is cheaper, bekko-system-one or startlux-decision?
bekko-system-one: Free (open weights). startlux-decision: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Which is faster, bekko-system-one or startlux-decision?
By their publishers’ figures, bekko-system-one answers in about 5 ms at the median and startlux-decision in about 26 ms — measured on different hardware, so treat it as a rough guide.
Can I run bekko-system-one or startlux-decision locally?
Yes, both: systemone pull hotchpotch/bekko-system-one and systemone pull startlux/startlux-decision download the weights.
p95 latency
5.4 ms
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Evaluation suite
The maker's short-input speed probe (4-option Choice, RTX 5090, 1 Oct 2026)
JevBench public set (231 items; 204 correct), maker's run
