A 4B biomedical decision model by Dimitris Papadopoulos: Qwen3.5-4B tuned with Together AI's Tev1 recipe on 1.75M pharma, clinical-trial and literature decisions. One forward pass gives a temperature-scaled probability per option. Research use only.
A family of open System One models by Mark Marosi that softmax option-letter logits at an answer slot: decider-0.8b, 2b, 4b and 35b-a3b on Qwen3.5 bases, decider-12b on Gemma-4-12B-it, and training-free readouts of larger chat models. This page carries decider-2b v11.
Decides
choice, score, noul, classify
choice, score, noul, classify, route
Architecture
biodecision
decider
Fine-tuned from
qwen/qwen3.5-4b
qwen/qwen3.5-2b-base
License
Research use only (several training sources are non-commercial); not validated for patient care
apache-2.0
Availability
Open weights
Open weights
Hosted by
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Input price
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Decision accuracy
75.3%
75.2%
Calibration error
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Valid action rate
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Median latency
39 ms
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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 biodecision and decider?
biodecision is from Dimitris Papadopoulos and decider from Mapika. Both have open weights you can download and run. Both answer choice, score, noul and classify questions. Only decider answers route. decider is the smaller model, at 1.9B parameters to 4.0B. biodecision is licensed other; decider, apache-2.0.
Which is more accurate, biodecision or decider?
They report on different suites — biodecision 75.3% on BioDecision v2 held-out test set (63,432 overlap-screened decisions from public biomedical benchmarks; the maker's own split), decider 75.2% on Decider regression set, 28 held-out tasks (decider-2b v11) — so the numbers do not rank them. Test both on your own labelled examples.
Which is cheaper, biodecision or decider?
biodecision: Free (open weights). decider: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run biodecision or decider locally?
Yes, both: systemone pull lighteternal/biodecision and systemone pull mapika/decider download the weights.
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Evaluation suite
BioDecision v2 held-out test set (63,432 overlap-screened decisions from public biomedical benchmarks; the maker's own split)
