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GPT-6 Astra Just Crossed a Line No Model Has Crossed Before. Here's What It Means for Your Threat Model

This story is from 2026-09-04. It is preserved in the archive; the latest stories are on the live feed.

OpenAI's newest model can find and chain zero-days without a human walking it through each step. If you build or defend AI systems, that changes your job starting now. During pre-release testing, OpenAI's GPT-6 Astra found two unknown vulnerabilities in a hardened browser engine, chained them toget…

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  1. 2026-09-04 11:49 · DEV Community — Machine Learning
    GPT-6 Astra Just Crossed a Line No Model Has Crossed Before. Here's What It Means for Your Threat Model

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