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The trick: Zero Underneath

OpenAI patched the jailbreaks a government lab found.

Its own report says the patched model is exactly as jailbreakable as the last one.

Issue 814 August 20263 receipts3 min

OpenAI addressed the universal jailbreaks the UK AI Security Institute found in GPT-5.6 Sol and shipped fixed models on August 6, capability up and safeguards up.

Before you read on. Your call?

OpenAI says it worked to reproduce and mitigate the specific jailbreaks AISI reported, which is narrower than fixing the class. Its own system card states GPT-5.6-Sol performs comparably to recent predecessors on jailbreak robustness, the model stays rated High for cyber capability, and AISI expects further red teaming to surface similar jailbreaks. A real patch of specific holes, sold as a solved problem.

0MEASURABLE ROBUSTNESS GAIN: 'ON PAR WITH PREDECESSORS' PER OPENAI
HighCYBER CAPABILITY RATING THAT STILL STANDS AFTER THE FIX
Aug 6SHIP DATE OF THE MODELS SOLD AS THE JAILBREAK FIX

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The trick has a name

We call it Zero Underneath: the headline number has nothing behind it. You'll see it again. Learn to spot it →

Say this in tomorrow's meeting“'Did robustness improve, or did you patch the specific reported jailbreaks?' OpenAI's system card answers: performance is comparable to predecessors. Those are different questions with different answers.”

Receipts

  1. Supports explainx.ai: Cyber: capability up, safeguards up
  2. Refutes web.archive.org: GPT-5.6-Sol performs comparably to recent predecessors and is similar to GPT-5.5-Thinking in particular.
  3. Context fortune.com: expects further red teaming to surface similar jailbreaks

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