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 local, Jev-compatible decision model from Rizzo AI Academy. XHToken's Spark-X2.5-4B with a merged typed-decisions LoRA, run on llama.cpp; yes/no, choice and score questions share one prefill of the state and are read from the answer-letter logits. No text is generated.
Decides
choice, score, noul, classify
choice, score, noul, classify, route
Architecture
biodecision
rizzo-flow
Fine-tuned from
qwen/qwen3.5-4b
xhtoken/spark-x2.5-4b
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
—
—
Input price
—
—
Decision accuracy
75.3%
64.8%
Calibration error
—
0.112
Valid action rate
—
—
Median latency
39 ms
195 ms
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 rizzo-flow?
biodecision is from Dimitris Papadopoulos and rizzo-flow from Rizzo AI Academy. Both have open weights you can download and run. Both answer choice, score, noul and classify questions. Only rizzo-flow answers route. biodecision is licensed other; rizzo-flow, apache-2.0.
Which is more accurate, biodecision or rizzo-flow?
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), rizzo-flow 64.8% on LocalLLaMA/typed-decisions test split (400 cases, 2,000 decisions), Q8_0 — so the numbers do not rank them. Test both on your own labelled examples.
Which is cheaper, biodecision or rizzo-flow?
biodecision: Free (open weights). rizzo-flow: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Which is faster, biodecision or rizzo-flow?
By their publishers’ figures, biodecision answers in about 39 ms at the median and rizzo-flow in about 195 ms — measured on different hardware, so treat it as a rough guide.
Can I run biodecision or rizzo-flow locally?
Yes, both: systemone pull lighteternal/biodecision and systemone pull rizzo-ai-academy/rizzo-flow download the weights.
—
Evaluation suite
BioDecision v2 held-out test set (63,432 overlap-screened decisions from public biomedical benchmarks; the maker's own split)
LocalLLaMA/typed-decisions test split (400 cases, 2,000 decisions), Q8_0
