An open-weights System One model from Convai Innovations. A fully fine-tuned ModernBERT-large encoder with a from-scratch decision head that scores one marker per option and answers every question in a single 33–39 ms pass. Runs on your own CPU or GPU.
Uprelic's hosted decision API, run on GPUs in Paris. Answers noul, choice and score questions about text, JSON and up to 8 images, with a probability for every option and no generated text, on the same request shape as Jev. No weights; base model and size not disclosed.
Decides
choice, score, noul, classify, route
choice, score, noul, classify, route
Architecture
laya
strom
Fine-tuned from
answerdotai/modernbert-large
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License
apache-2.0
proprietary
Availability
Open weights
Hosted API
Hosted by
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Uprelic
Input price
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$0.042/MTok
Decision accuracy
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87.0%
Calibration error
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0.033
Valid action rate
—
—
Median latency
39.5 ms
136 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 laya and strom?
laya is from Convai Innovations and strom from Uprelic. laya has open weights you can download and run; strom is only available as a hosted API. Both answer choice, score, noul, classify and route questions. strom reads up to 32K tokens of state, against 512 tokens for laya. laya is licensed apache-2.0; strom, proprietary.
Which is more accurate, laya or strom?
Only strom publishes an accuracy figure (87.0% on JevBench public set (231 items), the maker's production run of Strom 1.0.7 on 1 Oct 2026 (Open-Jev harness format)); laya does not, so there is no comparison to make without your own test.
Which is cheaper, laya or strom?
laya: Free (open weights). strom: $0.042 / $0 per 1M. Open weights cost nothing per call beyond your own hardware.
Which is faster, laya or strom?
By their publishers’ figures, laya answers in about 39.5 ms at the median and strom in about 136 ms — measured on different hardware, so treat it as a rough guide.
Can I run laya or strom locally?
laya yes — systemone pull convai-innovations/laya downloads its weights. The other is only served as a hosted API.
Evaluation suite
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JevBench public set (231 items), the maker's production run of Strom 1.0.7 on 1 Oct 2026 (Open-Jev harness format)
