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arc-decide vs bekko-system-one

Q: Can I run arc-decide or bekko-system-one locally?

Yes, both: systemone pull arc53/arc-decide and systemone pull hotchpotch/bekko-system-one download the weights.

Arc53: arc-decide and Yuichi Tateno (hotchpotch): bekko-system-one, compared on what they decide, where they run, what they cost and what their publishers report.

The short version

Both have open weights you can download and run.
Both answer choice, score and noul questions.
Only arc-decide answers classify, rank and route.
bekko-system-one is the smaller model, at 395M parameters to 600M.
arc-decide is licensed mit; bekko-system-one, other.

Property	arc53/arc-decide	hotchpotch/bekko-system-one
Summary	A 0.6B decision model on Qwen3-0.6B-Base from the DocsGPT team. Give it a state and typed questions (yes/no, a choice of up to 16 options, a 3- or 4-level score) and it returns calibrated probabilities in one pass, for RAG and agent checks.	Ultra-small English encoders (17M, 68M and 395M) fine-tuned from Ettin rerankers. Each answers choice, noul and score questions with a probability per candidate and no generated text. Experimental v0 by one developer; the weights have no licence assigned yet.
Decides	choice, score, noul, classify, rank, route	choice, noul, score
Architecture	arc-decide	bekko
Fine-tuned from	qwen/qwen3-0.6b-base	cross-encoder/ettin-reranker-400m-v1
License	mit	Unassigned: the weights licence is not finalised (treated as non-commercial); training code MIT
Availability	Open weights	Open weights
Hosted by	—	—
Input price	—	—
Decision accuracy	—	—
Calibration error	—	—
Valid action rate	—	—
Median latency	—	5 ms

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 arc-decide and bekko-system-one?

arc-decide is from Arc53 and bekko-system-one from Yuichi Tateno (hotchpotch). Both have open weights you can download and run. Both answer choice, score and noul questions. Only arc-decide answers classify, rank and route. bekko-system-one is the smaller model, at 395M parameters to 600M. arc-decide is licensed mit; bekko-system-one, other.

Which is more accurate, arc-decide or bekko-system-one?

Neither publishes an accuracy figure. Test both on your own labelled examples.

Which is cheaper, arc-decide or bekko-system-one?

arc-decide: Free (open weights). bekko-system-one: Free (open weights). Open weights cost nothing per call beyond your own hardware.

Can I run arc-decide or bekko-system-one locally?

Yes, both: systemone pull arc53/arc-decide and systemone pull hotchpotch/bekko-system-one download the weights.