Scaling Trusted Access for Cyber with GPT-5.5 and GPT-5.5-Cyber

OpenAI has released GPT-5.5, its most advanced model, and is now rolling out GPT-5.5-Cyber in limited preview to support specialized cybersecurity workflows. These models are integrated with Trusted Access for Cyber (TAC), an identity and trust-based framework designed to provide enhanced cyber capabilities to verified defenders while restricting misuse. TAC offers lower refusal rates for authorized cybersecurity tasks like vulnerability identification, malware analysis, and patch validation, while still blocking malicious activities. Different access levels cater to various needs: standard GPT-5.5 for general use, GPT-5.5 with TAC for most defensive tasks, and GPT-5.5-Cyber for specialized, high-risk workflows such as authorized red teaming and penetration testing, requiring stronger verification. OpenAI is partnering with security vendors to integrate these capabilities across the security ecosystem, aiming to accelerate threat detection, response, and remediation. The company emphasizes responsible access expansion as identity verification, misuse monitoring, and approved-use scoping improve.

(Source：OpenAI)