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[ARTICLE · art-156793] src=hinoki.security ↗ pub= topic=artificial-intelligence verified=true sentiment=· neutral

Hinoki Offensive One, the first open access cyber model

Hinoki Security released Hinoki Offensive One (HO1), which it calls the first open-access offensive cyber model, scoring 88.1% on CyberGym — 2.5 points above OpenAI's dedicated GPT-5.5-Cyber. Hinoki says HO1 works through offensive security tasks turn by turn within a user-set policy where GPT-6.1-Sol refuses outright, and the model is usable through Claude Code, Codex, OpenCode, VS Code and Cursor. The release puts a gated-class cyber capability in unrestricted public hands, raising dual-use questions for defenders and attackers alike.

read1 min views1 publishedOct 24, 2026
Hinoki Offensive One, the first open access cyber model
Image: source

Afrontiercyber AIlab. Meet Hinoki Offensive One, the first open-access cyber model.

[Use HO1 with Claude Code, Codex, OpenCode, VS Code, Cursor](https://app.hinoki.security/sign-up)

[HO1 against the frontier](#runs)

HO1 runs tasks that other models refuse. #

Hinoki Offensive One works through the real task turn by turn within the policy you set. GPT-6.1-Sol refuses outright.

Transcript

Scores like a gated cyber model. Open to anyone. #

On CyberGym, HO1 scores 88.1%, 2.5 points above OpenAI’s dedicated GPT-5.5-Cyber.

  1. HO10.0%
2. GPT-5.5-Cyber0.0%
3. GPT-5.6-Sol0.0%
4. DeepSeek-V4-Pro0.0%
  1. Claude Mythos Preview0.0%
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