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.
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, score, noul, classify
choice, score, noul, classify, route
Architecture
biodecision
kev
Fine-tuned from
qwen/qwen3.5-4b
qwen/qwen3.5-4b-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%
83.8%
Calibration error
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0.042
Valid action rate
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Median latency
39 ms
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p95 latency
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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 kev?
biodecision is from Dimitris Papadopoulos and kev from Jared Palmer. Both have open weights you can download and run. Both answer choice, score, noul and classify questions. Only kev answers route. biodecision is licensed other; kev, apache-2.0.
Which is more accurate, biodecision or kev?
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), 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, biodecision or kev?
biodecision: Free (open weights). kev: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run biodecision or kev locally?
Yes, both: systemone pull lighteternal/biodecision and systemone pull jared-palmer/kev 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)
