AIThe Decoder2h ago
GPT-5.5 matches Claude Mythos in cyber attack tests, UK AI Security Institute finds
OpenAI's GPT-5.5 is the second AI model capable of autonomously solving a full network attack simulation, according to the UK AI Security Institute. Its performance is nearly on par with Anthropic's Claude Mythos, which is still only available to a small group. GPT-5.5,…
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