The Decoder

The gap between open and closed AI models in cyber capabilities keeps shrinking

In the Vals AI benchmark, OpenAI's GPT-6 Sol Daybreak hits 80.8 percent of attack objectives in simulated corporate networks. Worse, the open-weight model DeepSeek V4.1 Flash reaches 72.8 percent at a tenth of the cost. Because open models can no longer be restricted, analysts say the window for defenders is shrinking fast.

By The Decoder

Excerpt shared by Lazyfounder

Nov 7, 2026·Excerpt

The gap between open and closed AI models in cyber capabilities keeps shrinking — Image: The AI agent operates from an isolated Kali Linux machine, independently sends commands to the simulated corporate network, and works its way from the web application through Windows servers to admin privileges. Every action is logged externally and scored automatically. | Image: Vals AI

AI agents can break into realistic corporate networks on their own, Vals AI finds

The Vals CyberOffense benchmark simulates realistic corporate networks to test this. Each agent operates…

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The gap between open and closed AI models in cyber capabilities keeps shrinking

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