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GPT-5.6 Sol does not cross the Cyber Critical threshold, even though in evaluations against Chromium and Firefox it identified bugs and exploitation primitives, because it did not autonomously produce a functional full-chain exploit under the tested conditions.

OpenAI states that despite strong cyber capability gains, GPT-5.6 Sol stopped short of autonomously chaining a full exploit against Chromium/Firefox, keeping it under the Preparedness Framework's Cyber Critical threshold. ✦ AI generated

OpenAI · Latent Space · 2026-06-27 · original ↗

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GPT‑5.6 Sol does not cross the Cyber Critical threshold under our Preparedness Framework. In evaluations involving Chromium and Firefox, it identified bugs and exploitation primitives—the building blocks of an exploit—but did not autonomously produce a functional full-chain exploit under the conditions tested.

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▦ OpenAI ✳ GPT-5.6 Sol ✳ Preparedness Framework

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rebuts → Testing found universal jailbreaks in GPT-5.6 Sol across every round that enabled long-form agentic task completion in vulnerability discovery and exploit development, making it the highest-stakes safety issue of any model release yet.alxndrdavies (AI Safety Institute) · Latent Space