OpenAI Releases GPT-5.5 with Advanced Vulnerability Detection Capabilities
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Summary
OpenAI is releasing GPT-5.5, a new AI model comparable to Anthropic's Mythos in vulnerability detection capabilities, but unlike Mythos (which is restricted), GPT-5.5 is being made freely available. The article, written from the perspective of XBOW (a security company), details their early access testing of GPT-5.5 for offensive security workflows, particularly in vulnerability detection and penetration testing. The model represents a significant step change in automated security capabilities.
Key quotes
· 3 pulledLike Mythos, GPT 5.5 delivers a step change in vulnerability detection.
Over the last couple of weeks, we've been part of a select group that had early access.
Models don't exist in a vacuum, so at XBOW, we don't evaluate them in isolation.
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