A family of open System One models by Mark Marosi, decider-0.8b, decider-2b, decider-4b and decider-35b-a3b on Qwen3.5 bases, that softmax letter logits at an answer slot. This page carries decider-2b v11.
meraGPT's hosted decision model (state-decider-1). Answers yes/no, choice and rubric-score questions over one state as calibrated distributions in a single pass, on the System One schema, so the typesafe-sdk works by changing its base URL.
Decides
choice, score, noul, classify, route
choice, score, noul, classify, route
Architecture
decider
state-decider
Fine-tuned from
qwen/qwen3.5-2b-base
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License
apache-2.0
proprietary
Availability
Open weights
Hosted API
Hosted by
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meraGPT
Input price
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$0.030/MTok
Decision accuracy
75.2%
76.8%
Calibration error
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Valid action rate
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Median latency
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p95 latency
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Evaluation suite
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 decider and state-decider-1?
decider is from Mapika and state-decider-1 from meraGPT. decider has open weights you can download and run; state-decider-1 is only available as a hosted API. Both answer choice, score, noul, classify and route questions. decider reads up to 32K tokens of state, against 4K tokens for state-decider-1. decider is licensed apache-2.0; state-decider-1, proprietary.
Which is more accurate, decider or state-decider-1?
They report on different suites — decider 75.2% on Decider regression set, 28 held-out tasks (decider-2b v11), state-decider-1 76.8% on typed-decisions benchmark (400 cases, 2,000 decisions; teacher-ensemble references), single run — so the numbers do not rank them. Test both on your own labelled examples.
Which is cheaper, decider or state-decider-1?
decider: Free (open weights). state-decider-1: $0.03 / $0 per 1M. Open weights cost nothing per call beyond your own hardware.
Can I run decider or state-decider-1 locally?
decider yes — systemone pull mapika/decider downloads its weights. The other is only served as a hosted API.
