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.
DecisionTune's 395M decision model: ModernBERT-large fine-tuned with a 4 KB scoring head that scores a marker per option, answering a choice or yes/no question in one encoder pass with a probability for every option. Runs locally on CPU or GPU via PyTorch, MLX or ONNX.
Decides
choice, score, noul, classify
choice, noul, route, classify
Architecture
biodecision
decisiontune
Fine-tuned from
qwen/qwen3.5-4b
answerdotai/modernbert-large
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%
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Calibration error
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Valid action rate
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Median latency
39 ms
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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 decisiontune?
biodecision is from Dimitris Papadopoulos and decisiontune from DecisionTune. Both have open weights you can download and run. Both answer choice, noul and classify questions. Only biodecision answers score. Only decisiontune answers route. decisiontune is the smaller model, at 395M parameters to 4.0B. biodecision is licensed other; decisiontune, apache-2.0.
Which is more accurate, biodecision or decisiontune?
Only biodecision publishes an accuracy figure (75.3% on BioDecision v2 held-out test set (63,432 overlap-screened decisions from public biomedical benchmarks; the maker's own split)); decisiontune does not, so there is no comparison to make without your own test.
Which is cheaper, biodecision or decisiontune?
biodecision: Free (open weights). decisiontune: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run biodecision or decisiontune locally?
Yes, both: systemone pull lighteternal/biodecision and systemone pull decision-tune/decisiontune download the weights.
p95 latency
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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)
