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.
A 396M ModernBERT-large cross-encoder that answers typed questions about a text or a JSON state: one or several options, scores, yes/no with "not stated", spans with evidence quotes, rankings and numeric bins, each with a confidence and an act-or-escalate signal.
Decides
choice, score, noul, classify, route
choice, score, noul, rank, extract
Architecture
security-one
solvi
Fine-tuned from
denis-pplx/autojev-27b
answerdotai/modernbert-large
License
apache-2.0
apache-2.0
Availability
Open weights + hosted API
Open weights
Hosted by
Superagent
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Input price
—
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Decision accuracy
99.8%
59.4%
Calibration error
—
0.210
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 security-one and solvi?
security-one is from Superagent and solvi from solvi. security-one has open weights and a hosted API; solvi has open weights you can download and run. Both answer choice, score and noul questions. Only security-one answers classify and route. Only solvi answers rank and extract. security-one reads up to 256K tokens of state, against 512 tokens for solvi. solvi is the smaller model, at 396M parameters to 27B.
Which is more accurate, security-one or solvi?
They report on different suites — security-one 99.8% on BIPIA binary prompt-injection detector adaptation (800 rows; Superagent's frozen evaluation, unsafe if P(unsafe) >= 0.70), solvi 59.4% on Fast Decisions public dev split (100 rows x 17 domains, macro), the maker's own harness, zero-shot — so the numbers do not rank them. Test both on your own labelled examples.
Which is cheaper, security-one or solvi?
security-one: Hosted, price not published, or free to self-host. solvi: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Can I run security-one or solvi locally?
Yes, both: systemone pull superagent/security-one and systemone pull solvi-ai/solvi download the weights.
