A 149.6M ModernBERT-base cross-encoder with a scalar head that picks an agent's next action or tool from labels and descriptions you supply. Each option is scored against the state and a softmax ranks the set; no text is generated. Experimental preview, not calibrated.
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, rank, route
choice, score, noul, classify, route
Architecture
modernjev
rizzo-flow
Fine-tuned from
answerdotai/modernbert-base
xhtoken/spark-x2.5-4b
License
apache-2.0
apache-2.0
Availability
Open weights
Open weights
Hosted by
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Input price
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Decision accuracy
73.4%
64.8%
Calibration error
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0.112
Valid action rate
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Median latency
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195 ms
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 modernjev-decide and rizzo-flow?
modernjev-decide is from Maziyar Panahi and rizzo-flow from Rizzo AI Academy. Both have open weights you can download and run. Both answer choice and route questions. Only modernjev-decide answers rank. Only rizzo-flow answers score, noul and classify. modernjev-decide is the smaller model, at 150M parameters to 4.0B.
Which is more accurate, modernjev-decide or rizzo-flow?
They report on different suites — modernjev-decide 73.4% on AgentToolDecisions-180K held-out test, next action type (1,158 decisions, 3 choices; the maker's 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, modernjev-decide or rizzo-flow?
modernjev-decide: Free (open weights). rizzo-flow: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run modernjev-decide or rizzo-flow locally?
Yes, both: systemone pull maziyar-panahi/modernjev-decide and systemone pull rizzo-ai-academy/rizzo-flow download the weights.
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Evaluation suite
AgentToolDecisions-180K held-out test, next action type (1,158 decisions, 3 choices; the maker's split)
LocalLLaMA/typed-decisions test split (400 cases, 2,000 decisions), Q8_0
