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.
Contrastive Language Models score a state against a set of candidate actions with a contrastive objective. Two projection heads on frozen Qwen3-8B embeddings, trained with InfoNCE; clm-serve maps Choice, Score and Noul onto candidate ranking.
Decides
choice, score, noul, classify
choice, score, noul, rank, classify, route
Architecture
biodecision
clm
Fine-tuned from
qwen/qwen3.5-4b
qwen/qwen3-8b
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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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 clm?
biodecision is from Dimitris Papadopoulos and clm from Contrastive-LM. Both have open weights you can download and run. Both answer choice, score, noul and classify questions. Only clm answers rank and route. biodecision is the smaller model, at 4.0B parameters to 8.0B. biodecision is licensed other; clm, apache-2.0.
Which is more accurate, biodecision or clm?
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)); clm does not, so there is no comparison to make without your own test.
Which is cheaper, biodecision or clm?
biodecision: Free (open weights). clm: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run biodecision or clm locally?
Yes, both: systemone pull lighteternal/biodecision and systemone pull contrastive-lm/clm 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)
