An open family of System One models. A LoRA adapter plus a pointer head on a frozen Qwen base returns a distribution per typed question in one forward pass, serves TypeSafe's /v1/systemone contract, and ships a fitted temperature with every checkpoint.
Superagent's 27B security decision model. It scores 2 to 16 supplied options in one forward pass and returns a probability for each, for triaging prompt injection, agent tool calls, code changes, logs and alerts. Apache-2.0 weights (gated, auto-approved) plus a hosted API.
Decides
choice, score, noul, classify, route
choice, score, noul, classify, route
Architecture
kev
security-one
Fine-tuned from
qwen/qwen3.5-4b-base
denis-pplx/autojev-27b
License
apache-2.0
apache-2.0
Availability
Open weights
Open weights + hosted API
Hosted by
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Superagent
Input price
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Decision accuracy
83.8%
99.8%
Calibration error
0.042
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Valid action rate
—
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Median latency
—
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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 kev and security-one?
kev is from Jared Palmer and security-one from Superagent. kev has open weights you can download and run; security-one has open weights and a hosted API. Both answer choice, score, noul, classify and route questions. security-one reads up to 256K tokens of state, against 8K tokens for kev. kev is the smaller model, at 4.0B parameters to 27B.
Which is more accurate, kev or security-one?
They report on different suites — kev 83.8% on transfer-v4 (locked, out of domain), security-one 99.8% on BIPIA binary prompt-injection detector adaptation (800 rows; Superagent's frozen evaluation, unsafe if P(unsafe) >= 0.70) — so the numbers do not rank them. Test both on your own labelled examples.
Which is cheaper, kev or security-one?
kev: Free (open weights). security-one: Hosted, price not published, or free to self-host. Open weights cost nothing per call beyond your own hardware.
Can I run kev or security-one locally?
Yes, both: systemone pull jared-palmer/kev and systemone pull superagent/security-one download the weights.
