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OpenAI’s GPT-5.5 is as Good as Mythos at Finding Security Vulnerabilities
UK evaluation confirms commercially available AI models now match specialized vulnerability discovery tools, democratizing code audit capabilities for both defenders and attackers.
Summary written by editorial AI · Source link below
The UK’s AI Security Institute evaluated GPT-5.5’s ability to find security vulnerabilities, and found that it is comparable to Claude Mythos. Note that the OpenAI model is generally available. Here is the Institute’s evaluation of Mythos. And here is an analysis of a smaller, cheaper model. It requires more scaffolding from the prompter, but it is also just as good.
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Read the full report at Schneier on SecurityExternal link — opens at Schneier on Security in a new tab.
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