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OpenAI launches GPT-5.6-Cyber with reduced refusals, 95% completion on advanced cybersecurity tasks
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- DeepHorus
OpenAI launched GPT-5.6-Cyber today as a specialized model for advanced vulnerability research and exploit development, targeting approved cybersecurity defenders. The model is a fine-tuned version of GPT-5.6 Sol, OpenAI's most advanced general model released in June, but trained specifically to improve performance on tasks such as finding zero-day vulnerabilities and developing exploit chains.
Crucially, OpenAI reduced refusals on higher-risk "dual-use" requests, which could be used for both defensive and offensive purposes. According to OpenAI's launch blog post, GPT-5.6-Cyber achieved a 95% completion rate on the Advanced Cybersecurity Completion Rate benchmark, compared to 57.3% for its predecessor GPT-5.5-Cyber and just 1.5% for the standard GPT-5.6 Sol.
The model is not broadly available. Access requires acceptance into OpenAI's new Daybreak Red tier, part of the Daybreak cybersecurity program announced today. Daybreak Red is reserved for approved security teams conducting authorized work, including penetration testing and exploit validation on systems they own or have permission to test. Applicants must pass vetting through Daybreak Access and demonstrate robust security controls, including multi-factor authentication, usage logging, and certifications like SOC 2 Type II.
Pricing for GPT-5.6-Cyber is set at $12.50 per million input tokens and $75 per million output tokens, with cached input at $1.25 per million tokens. This is more expensive than GPT-5.6 Sol, listed at $5 input and $30 output in the same Daybreak pricing table. Long-context pricing was not disclosed.
OpenAI researcher Eric Wallace described the release on X as the company's "first large-scale attempt at directly improving capabilities for advanced cybersecurity tasks such as exploit development." The move reflects growing demand for AI tools that can keep pace with offensive threats.
However, concerns remain about potential misuse. By limiting access to vetted defenders and requiring strict authorization, OpenAI aims to balance capability with safety. A second tier, Daybreak Blue, offers enterprises broader access to general models with relaxed guardrails for cybersecurity use. The longer-term impact will depend on whether these safeguards successfully prevent abuse while empowering legitimate security research.
